(1969). Effect of Crossing in the Productivity of Ducks: I.- Growth. Egyptian Journal of Animal Production, 9(2), 251-261. doi: 10.21608/ejap.1969.156203
. "Effect of Crossing in the Productivity of Ducks: I.- Growth". Egyptian Journal of Animal Production, 9, 2, 1969, 251-261. doi: 10.21608/ejap.1969.156203
(1969). 'Effect of Crossing in the Productivity of Ducks: I.- Growth', Egyptian Journal of Animal Production, 9(2), pp. 251-261. doi: 10.21608/ejap.1969.156203
Effect of Crossing in the Productivity of Ducks: I.- Growth. Egyptian Journal of Animal Production, 1969; 9(2): 251-261. doi: 10.21608/ejap.1969.156203
Effect of Crossing in the Productivity of Ducks: I.- Growth