共 27 条
[22]
Silk M H, 1970, S Afr J Med Sci, V35, P23
[23]
SILK M H, 1969, South African Journal of Medical Sciences, V34, P1
[24]
SILK M H, 1969, South African Journal of Medical Sciences, V34, P93
[27]
SPENCE I M, 1970, South African Journal of Medical Sciences, V35, P93