00363nam a22001337a 4500008004100000040005500041080001800096100001400114245002600128260003400154300001000188650001500198653001600213230331b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 77:7.05bK31 aCroy, O R  aDesign by photography  aLondon: bFocal Press, c1963  a148p.  aPhotograph  aElimination