共 8 条
[2]
Landsberg J. J., 1977, Journal of the Royal Agricultural Society of England, V138, P116
[3]
LANDSBERG JJ, 1977, 1976 LONG ASHT RES S, P119
[4]
LANDSBERG JJ, 1980, OPPORTUNITIES INCREA
[6]
Williams R. R., 1970, Physiology of tree crops,, P193
[7]
WILLIAMS RR, 1970, REGULATED CROPPING, P11
[8]
WILLIAMS RR, 1966, 1965 LONG ASHT RES S, P136