lal, s. (1999). A textbook of practical zoology invertebrate (7th ed.). rastogi.
Chicago Style (17th ed.) Citationlal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. meerut: rastogi, 1999.
MLA citiranjelal, s.s. A Textbook of Practical Zoology Invertebrate. 7th ed. rastogi, 1999.
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