الفهرس 
contentsOnly 14 pages are availabe for public view
 |  | from | 166 |  |  |
| | | from | 166 | | |
Abstract
Gastropods constitute an attractive field for biologists because of their economic impotance science some snails cause harm for man and his animals and plants the terrestrial pulmonate snails have gained their economic importance since they became among the pests attacking several crops in many parts of the world baker 1988 and baker vogelzang 1988 they are well known as serious agricultural pests attacking several vegetations in the egyptian coasstal areas kassab and daoud 1964 bishara et al 1968 and el okda 1979.