00281nam a2200109 a 4500008004100000050001600041245002200057246003100079260003300110300001900143350000900162080109s1991    ||||||||||||||||| ||    u  aQ 175.3 Ame10aScience in Africa  aachievements and prospects  aWashington D. C.bAAASc1991  axi, 155p : ill  a0.00