Weisz P. B, . (1971). The Sci. of Biology. : Tata McGraw Hill Pub. Co., Bombay.
Weisz P. B, . 1971. The Sci. of Biology. : Tata McGraw Hill Pub. Co., Bombay.
Weisz P. B, . The Sci. of Biology. : Tata McGraw Hill Pub. Co., Bombay. 1971.