Jull M.A, . (1951). Poultry Husbandry. : Mc Grawe Hill Book Company, New York.
Jull M.A, . 1951. Poultry Husbandry. : Mc Grawe Hill Book Company, New York.
Jull M.A, . Poultry Husbandry. : Mc Grawe Hill Book Company, New York. 1951.