00501nam a22001457a 4500008004100000040005500041080002600096245008900122250001200211260005900223300000900282650002400291653001200315700002800327230331b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aD 778.14:771bK4;L5.3  aGuide to micrographic equipmentc/ The National Microfilm AssociationbCOM recorders  a6th ed.  aMaryland: bThe National Microfilm Association, c1975  a56p.  aInformation science  aMeeting  aBallou, Hubbard W (Ed.)