00249nam a2200097Ia 4500080001900000245006000019260003500079300001100114500000700125583001900132  a01.03.01 P187b  aBasic documents of the Pan American Health Organization  bPAHOaWashington, D.C.USc1991  a123 p.  aDC  c3/7/00kM2LMGR