na INLIS000000000006243 20250602105150 0010-0625000005 Accelerating the transfer of wheat breeding gains to farmers: a study of the dynamics of varietal replacrmrnt in Pakistan / Paul W. Heisey Paul W. Heisey 94 p. : Ilus, Tab. ; 25 cm BRMP PADI Mexico, D.F. : CIMMYT, 1990 633.11-152(54) ACC 968-6127-40-2 WHEAT, SEREALIA 250602 0 eng 034/1991