00306nam a2200133Ia 450000500170000008000180001710000080003524500320004326000320007530000170010758300190012494200120014399900170015520260716043024.0  a15.04.02 W927  aWHO  aAids prevention and control  bPergamon P.aOxfordUKc1988  axxii, 169 p.  c3/7/00kM2LMGR  cMmW927  c38870d38870