00374nam a22001337a 4500008004100000040005500041080001600096100001800112245002600130260003500156300001100191650002100202653001700223230303b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 021.6bK6  aJefferson, G   aLibrary Co-operation   aLondon: bGrafton Book, c1966  a160p.   aLibrary science   aCo-operation