عدد 468 مقال تحت قسم الكتب المتخصصة
- الأحدث
- الأكثر مشاهدة
- الأكثر تصويتا
الترتيب حسب
-
About Using Computer
-
INVERTEBRATE ZOOLOGY THE MIDEASTERN INVERTEBRATE FAUNA
Introduction to phylum mollusca; the caudofoveata, Aplacophora and polyplacophora The Monoplacophora and Gastropoda The Pelecypoda and Scaphopoda The Cephalopoda; Phylogeny of the Mollusca Phylum
-
this book is concerned with the comparitive physiology of marine animals,and aknowledge of comparitive morphology of animal behaviour
-
Garden Farming Series Fish Farming
Rules and Regulations Adapting and Constructing Pools Waterfalls and Watercourses Oxygenators, Pumps and Filters Water Plants General Management of the Fishpond How fish Live Fish Suitable for Garden Fish Farming
-
Color - Size and Measurements Keys – Seasons – Laws – Literature PARTS OF A FISH SALT- WATER FISHES FRESH- WATER FISHES Key to
-
يتكلم الكتاب عن بحيرات مصر
-
يعتبر هذا الكتاب هو الأول من نوعه باللغة العربية فى علاج وسائل صيد الأسماك وأدواته واستراتيجيته فى ذلك الوقت .بدأ الكاتب بلمحة تاريخية بين فيها كيف تعتبر مهنة
-
تشكل الموانى أهمية بالغة للدول البحرية نظراً لما تحققه من إقتصاديات تحفز حركة تجارتها البحرية كما تعد مركزاً رئيسياً لصناعات النقل البحرى والخدمات المتصلة بهذه الصناعة وأضحى الإهتمام
-
A blue-spotted stingray Taeniura Iymma, Red Sea The graceful, flapping, almost birdlike flight of rays through the water is quite different from the swimming actions of other fishes Almost every
-
The Water Cycle ; water sources; water hardness; the PH of water; ironand copper compounds; chloramines; ammonia, nitrites and nitrates;osmosis; aeration and filtration The influence of
-
Production cycles in upwelling areas The part played by nutrients in the sea Models of production in the sea The circuits of migration and the unity of fish stocks Growth
-
Free – Living Fresh Water Protozoa A Colour Guide
Classification of Protozoa How to use the Key The Key Protozoan communities Glossary Bibliography
-
597.0182/H.C Edited by Research on Olfact ion in Fishes: Historical Aspects Development and Regeneration of the Olfactory Organ in Rainbow Trout Comparative Morphology of the Peripheral Olfactory Organ in Teleosts
-
FRESHWATER CRAYFISH BIOLOGY, MANAGEMENT AND EXPLOITION
595.3841/H.F Contents Functional Morphology and Anatomy Crayfish Distribution, Adaptive Radiation and Evolution Growth, Moulting and Reproduction Ecology, Population Biology and Behaviour Food and Feeding Pathogens, Parasites and Commensals
مكتبة جهاز وتنمية البحيرات والثروة السمكية
ابحث
تسجيل الدخول
عدد زيارات الموقع