البحث عن: العنوان المؤلف الموضوع السلسلة رقم الطلب الذي يبدأ بـ: 10 20 30 50 100 لكل صفحة < العناوين 10 السابقة العناوين 10 التالية > تصفح العناوين # Population aging 4 SEE ALSO: Age distribution (Demography) 2 Population aging -- Economic aspects. 4 Population aging -- Political aspects. 1 Population aging -- Political aspects -- United States. 2 Population aging -- Social aspects. 1 Population aging -- United States. 3 Population biology -- SEE ALSO narrower term: Age-structured populations 1 SEE ALSO narrower term: Animal populations 2 SEE ALSO narrower term: Biological invasions 8 SEE ALSO narrower term: Biotic communities 81 SEE ALSO narrower term: Competition (Biology) 4 SEE ALSO narrower term: Ecological carrying capacity 2 SEE ALSO: Ecology 389 SEE ALSO narrower term: Group selection (Evolution) 1 Population biology -- Juvenile fiction. 1 Population Control -- SEE: Birth control 20 Population control -- Fiction 1 10 20 30 50 100 لكل صفحة < العناوين 10 السابقة العناوين 10 التالية >