00324nam a22000737a 4500008004100000245012300041264002800164653005800192250314s1970    fr ||||| |||| 00| 0 eng d  aSurvey on the Scientific and Technical Potential of the Countries of Africa /cUnesco Field Science office for Africa.  aParis :bUnesco,c1970.  aმეცნიერება და ცოდნა