Article · Journal · 1979
HISASHI YAMAMOTO, A. A. N. U. Njokuu-Obi, F. O Chukwuma, I. UGWUEGBLAM, E. AHUMIBE
Japanese Journal of Tropical Medicine and Hygiene
Read it10.2149/tmh1973.7.7
as printed: F.O. CHUKWUMA
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