Gupta P. K., . (1976). Textbook of cytology genetics and evolution. Meerut: Rastogi & Co.
Gupta P K, . 1976. Textbook of cytology genetics and evolution. Meerut: Rastogi & Co.
Gupta P K, . Textbook of cytology genetics and evolution. Meerut: Rastogi & Co. 1976.