Volume & Issue: Volume 12, Issue 1, June 1987 (With cover) 
The Optical Analysis of an Asymmetrical Piece-Wise Concentrator.

Pages 23-33

Helmy El-Sayed Ibrahim Gad; H. A. El-Seddiek; M. M. Awad


Investigation of El Bahr El Sagheir as a Source for Drinking Water.

Pages 1-9

Ibrahim Gar Al-Alm Rashed; Salah El Begawy; Mohamed M. El Dessouky; Mahmoud A. El-Komy


The Effect of Air Pollution on Garments of Labours Working in Fertilizer Factories.

Pages 98-108

Ibrahim Gar Al-Alam Rashed; A. E. Bastawissi; A. M. El-Hossini; Aly F. Saker