TY - BOOK AU - Preston,T R AU - Leng,R A TI - Matching ruminant production systems with available resources in the tropics and sub-tropics U1 - 636.089 21 PY - 1987/// CY - Armidale, N.S.W. : PB - Penambul Books, KW - Cattle -- Feeding and feeds -- Economic aspects ER -