共 34 条
[2]
ANDERSON E, 1974, INT REV CYTOL, P1
[5]
BELL RHV, 1982, ECOLOGY TROPICAL SAV, P145
[6]
Bhalotra Y P R, 1987, CLIMATE BOTSWANA 2
[8]
CAMPBELL AC, 1990, FUTURE BOTSWANAS ELE
[9]
CAUGHLEY G, 1976, E AFR WILDL J, V14, P265
[10]
CHILD G, 1968, FAO TA2563 PUBS