共 30 条
[22]
ROBERTS JMD, 1970, E AFRICAN SCIENTIFIC
[23]
SALVIDIO E, 1972, P HELM SOC WASH, V39, P83
[24]
SEGAL HE, 1973, J TROP MED HYG, V76, P285
[26]
SEGAL HE, 1974, B WORLD HEALTH ORGAN, V50, P505
[27]
SEGAL HE, 1975, TROP GEOGR MED, V27, P160
[28]
VERDRAGER J, 1969, Bulletin of the World Health Organization, V40, P319
[29]
WILKINSON RN, 1973, 9TH INT C TROP MED M
[30]
1973, WHO529 TECH REP SER