الفهرس 
INTRODUCT IONOnly 14 pages are availabe for public view
 |  | from | 288 |  |  |
| | | from | 288 | | |
Abstract
Present investigations concerned with some biological studies on Tilapia species in the Middle region pf Lake Manzalah throughout the period from April, 1986 to January, 1988. Furthersamples were collected in July and August,1989. The analysis comprised growth, food and feeding habits and reproduction.