na INLIS000000000000263 20190925054711 0010-0919000081 Responses of two genotypes of lambs on the infection of Haemonchus contortus and the level of energy supplements Simon P Ginting, Aron Batubara, Endang Romjali, M Rangkuti Jurnal Ilmu Ternak dan Veteriner, 1999 00000000322