00470nam a22001457a 4500008004100000040005500041080001600096100002200112245009400134250001200228260003600240300001000276650002100286700001700307230321b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 681.3bM4  aHoughton, Bernard  aOnline information retrieval systems: bAn introductory manual to principles and practice  a2nd ed.  aLondon: bClive Bingley, c1935  a205p.  aComputer science  aConvey, John