00272nam a2200109Ia 450000500170000000800410001708200150005810000160007324500300008926000350011930000080015420260205054356.0260111s9999||||xx |||||||||||||| ||und||  a540  K527N  aKhanna,M.S. 0aNew concepts in chemistry  aKarnalbJyoti book depotc2006  a2v.