E S E Hafez. (1987). reproduction in farm animals (4th.). Lea And Febiger.
शिकागो स्टाइल उद्धरणE S E Hafez. Reproduction in Farm Animals. 4th. Lea And Febiger, 1987.
एमएलए उद्धरणE S E Hafez. Reproduction in Farm Animals. 4th. Lea And Febiger, 1987.
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