00253nam a2200097Ia 4500008004100000082001300041100001900054245003300073260003900106300001000145240817s9999    xx            000 0 und d  a542.2 E9  aDunnicliff,H.B 0aLaboratory glassware economy  c1919a Londonb macmillan & co  a92 p.