00329nam a2200133Ia 4500008004100000041001200041082001900053100002800072245002900100250001200129260003300141300000800174650001300182231221s9999    xx            000 0 und d  aEnglish  a372.357  YAD;3  aYadav, Seema Singh, A K 0aTeaching of life science  a1st ed.  c1993bAnmol Publ.aNew Delhi  a282  aTeaching