TY - BOOK AU - El-Gaafarawy,Ahmed Mohamed Abd El-Moety TI - Genetical and some environmental influences affecting growth rate of friesian calves and crosses up till maturity PY - 1979/// KW - Friesian cattle KW - Genetics KW - Calves KW - Feeding and feeds KW - Growth N1 - Thesis (M.S.) -- Al-Azhar University, 1979; Includes bibliographical reference (leaves 77-93); Microfiche; Cairo, Egypt; ASUNET; 2 microfiche : negative ER -