00531nam a2200169 a 450000500170000000800410001710000150005824501380007325000110021126000330022230000070025550000170026265000270027965000260030665000160033285200130034820200107024923.0080115s19uu    xx            00    eng d10aEsto, Rey.10aWorld scientists and inventors for the students :bwith pictures and biographies for their inventions and discoveries /cby Rey Esto.  a=s.l.=0 bR.E. Books Marketing,c1989.  av.  aCover title.  aScientistsxBiography.  aInventorsxBiography. 4aInventions.  7Donation