1.

EFFECT OF HYPTIS BREVIPES DICHLOROMETHANE EXTRACT ON FEEDING AND HISTOLOGICAL STRUCTURE OF THE MIDGUT AND MALPIGHIAN TUBULES OF SPODOPTERA LITTORALIS LARVAE (LEPIDOPTERA: NOCTUIDAE)

Pages 1-18
Hanem H. Sakr
2.

HISTOCHEMICAL EFFECTS OF SOME INSECT GROWTH REGULATORS ON THE HOUSE FLY, MUSCA DOMESTICA (DIPTERA: MUSCIDAE)

Pages 21-40
A. A. Assar; M. M. AboEl-Mahasen; M. E. Khalil; S. H. Mahmoud
3.

RESERVOIR CHARACTERIZATION OF ALAM EL BUEIB Dl SAND RESERVOIR IN UMBARAKA AND SOUTH UMBARKA OIL FIELDS, WESTERN DESERT, EGYPT.

Pages 41-68
Mohammed F. Abu-Hashish; Khaled Elmaadawy
4.

DETECTING THE GROUND WATER ZONE OF THE QUATERNARY AQUIFER USING THE VERTICAL ELECTRICAL SOUNDING IN EL-QAA PLAIN, SAINAI, EGYPT.

Pages 69-87
A. G. Abd El-Hameed; H. M. El-Shayeb; M. S. Youssef
5.

PHYSICAL AND CHEMICAL CHANGES DURING COMPOSTING CYCLES OF RICE STRAW

Pages 89-100
Mohamed Hefnawy; Mohamed Gharieb; Osama M. Nagdi
6.

L-ASPARAGINASE PRODUCTION BY STREPTOMYCES HALSTEDII ISOLATED FROM EGYPTIAN SOIL

Pages 101-130
Sabha El-Sabbagh
7.

THE EFFECT OF SELF-ABSORPTION ON THE DETERMINATION OF NICKEL BY FLAME ATOMIC ABSORPTION SPECTROMETRY

Pages 131-151
A. M. Habib