00259nam a2200109Ia 4500080001800000245004700018250000900065260003800074300001000112500000800122583001900130  a10.05.01 I611  aPrincipal instruments of the Warsaw system  a3 ed  bThe AssociationaMontrealCAc1991  a97 p.  aIDS  c3/7/00kM2LMGR