共 12 条
[2]
AGGARWAL GC, 1983, ENERGY CONSERVATION, V2, P1
[3]
Beri V, 1981, INDIAN FARMING, V31, P6
[4]
BHARDWAJ SP, 1981, INDIAN J AGR SCI, V51, P86
[5]
GILL GS, UNPUB DAIRY ENTERPRI
[6]
MILLER CE, 1958, FUNDAMENTALS SOIL SC, P277
[7]
Pradhan K., 1979, Indian Dairyman, V31, P193
[8]
SINGH R, 1982, INDIAN J AGRON, V27, P371
[9]
TIWARI KN, 1980, INDIAN J AGRON, V25, P137
[10]
1966 67 PUNJ AGR U D