共 5 条
[1]
CHIN J, 1990, B WORLD HEALTH ORGAN, V68, P529
[2]
*PAN AM HLTH ORG W, 1991, SUBR WORKSH EP SURV
[4]
*WHO, 1989, GPA893
[5]
*WHO GLOB PROGR AI, 1991, M SENT HIV SURV DAK