00405nam a22001457i 4500001001000000005001700010008004100027082002100068100001600089245004800105260004800153300001700201650002300218020001800241SXC01970920260819093653.0260101s1971    ii            000 0 eng d  a540.76 STR-W222  aStrack, H P10aWorked examples in chemistry /cStrack, H P  abHutchinson Educational Ltd, London,c1971  ap. ;c22 cm. 0aChemistry-Problems  a9780091059101