32:19

Classification of Reptilia || Skull types in Reptiles ||BSc 3rd Year Zoology 5th Semester 2nd paper

24:18

General Characters of Class Mammalia || BSc 3rd Year Zoology 5th Semester 2nd paper

28:23

General Characters of class Aves || B.Sc 3rd year Zoology 5th Semester 2nd Paper || MSc Zoology

25:29

General characters of superclass pisces || BSc 3rd Year Zoology 5th Semester 2nd paper

29:29

Classification of Class Mammalia || BSc 3rd Year Zoology 5th Semester 2nd paper

30:12

General characters and classification of Class Amphibia || BSc 3rd Year Zoology 5th Seme 2nd paper

26:33

Reproductive system of herdmania || BSc 3rd Year Zoology 5th Semester 2nd paper

16:27

General characters and classification of Subphylum cephalochordata