共 13 条
[1]
AGEEB OAA, 1975, COMMUNICATION
[2]
Ayoub A. T., 1974, Sudan Agricultural Journal, V9, P58
[3]
AYOUB AT, 1975, STUDIES INCIDENCE HE
[4]
BUURSINK J, 1971, THESIS U UTRECHT
[5]
CHAPMAN HD, 1961, METHODS ANALYSIS SOI
[6]
DAS SK, 1973, INDIAN J AGRICULTURA, V41, P882
[7]
GREENWAY H, 1973, J AUST I AGR SCI, V39, P24
[9]
HOAGLAND DR, 1950, 347 CAL AGR EXPT STA