00410nam a2200121Ia 450000500170000000800410001708200160005810000580007424500920013226000270022430000140025165000230026520240821155208.0240821s9999||||xx |||||||||||||| ||und||  a574 NAT(TB)  aNational Council of Educational Research and Training 0aBiology: a textbook for higher secondary schools: section 1 some basic facts about life  aNew DelhibNCERTc1964  axiv,100p.  aBiology - textbook