Practical methods in ecology and environmental science

द्वारा Trivedy, R K; Goel, P K; Trisal, C L
प्रकाशित 1987

Advances in environmental modelling

द्वारा Marani, A, Ed
प्रकाशित 1988

Ecological methods with special reference to the study of insect populations

द्वारा Southwood, T R E
प्रकाशित 1976

Ecological methods with particular reference to the study of insect populations

द्वारा Southwood, T R E
प्रकाशित 1978