00305nam a2200097Ia 4500008004100000082001500041100004300056245007600099260002500175300000700200140113s9999    xx            000 0 und d  a778.1   L2  aBritish Standard Institute (Anonymous)  aPD6463 :1972 Microfilm in the office : an introduction to microscopying  a1972bB.S.I.cLondon  a11