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MATHEMATICS
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The effect of anharmonic terms on the
resonance of an oscillating system
Gad, Nabila A.; Abd El-Hady, Mona K.;
El-Sheikh, Soheir S.
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1
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On a singular differential operator of the
second order
A. A. Darwish, M.S.
Selem, E.E. Abd El-Aal
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19
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Two semiclassifying theorems for
metabelian groups
H. M. Hawidi, V. V. Sergeichuk
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31
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Isochronal surfaces for certaifr control
system
M. Z. Ragab
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44
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Distribution of velocities in an
oscillating gas bubble
N.M.H. Abdel Aziz-eHEMISTRY
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60
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Chemistry
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H - NMR study of 3-mono - 3,4 - & 3,6 -
substituted naphtho - (2,1 -b)- pyran -2- one derivatives
A. A. El-Khouly ; A.H. Bedair ; F.M. Aly
and A.M. El-Agrody
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69
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H_ study of some substituted oxonaphtho -
1,3 - oxazocine derivatives
A. A. EI-Khouly j F.M. Aly j A.H. Bedair
and A.M. EI-Agrody<
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81
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Some chemical aspects of
3-amino-l,2,4-triazole
M. El-Borai, A.A. El-Barbary, M. Fahmy and
H.H. El-Naggar
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93
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Some reactions of
4-amino(hydrazino)-3-mercapto-5-aryl-1,2,4-triazole
A.A. El-Barbary, H.H. El-Naggar
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102
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Geology
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Natural gamma ray spectral logging data as
environment indicators
Nader H. El-Gendy
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112
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Foot by foot evolution in some chalky
limestone Formations
Nader H. El-Gendy
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136
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Qualitative well log interpretation of
some early cretaceous formations in sidi abdel rahman area
Nadar H. El-Gendy and Azz El-Din Saleh
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161
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Botany
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Role of nicotinamide and salicylaldehyde
on some growth parameters in wheat
Y. A. H. Mohamed, A. Sharaf El-Din and E.
Foda
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191
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Influence of 2,4-D*-and CCC*-treatment on
the pigment contents and photosynthetic activity of Hordeum vulgare and Sorghum
bicolor
Hohamed El-Anwar H. Osman, El-Sayed A.M.
Hamada, Awatef A. Mohsen and Hameda A. El-Sayed
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242
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Formation of auxins, gibberellins and
vitamins by rhizosphere fungi and their effect on the growth of barley
Mostafa A. El-Sayed, Abd El-Raheem R.
El-Shanshoury and Hanaa S. Fahmy
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261
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Levels of nucleic acids and some related
enzymes in seedling of Beta vulgaris as influenced by some plant growth
regulators
Y.A.H. Mohamed, B.A. Abdel-Ghaffar and
M.A.H. El-Beheiry
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276
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Qualitative study on seed proteins of
Thymelaea hirsuta L. populations
R. H. Sammour and A. Sharaf El-Din
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290
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Effectiveness of some insecticides against
laboratory and field strains of the egyptian cotton leafworm Spodoptera
littoralis (boisd.) during 1985 season of cotton cultivation
S.A. Abdallah and I.M. El-Nabarawy
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313
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ZOOLOGY
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Some ecological observations on crustacean
amphipods associated with marine fouling in Suez canal (Egypt)
M. H. Mona, F.M. Abou-Senna, F.A. Shoukr,
and S. Ramadan
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332
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Effect of some insecticides on
biomphalaria alexandrina the intermediate host of schistosoma mansoni in Egypt
I. Toxicity and biological studies
El-Sheikh,H.; Hamid, M.E.; Mohamed, A.M.
and Mongy, S.
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356
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Further contribution on the pancreas of
the cichld fish, tilapia nilotica
Fouad A. Abou-Zaid and Siham B.Salem
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380
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