00326nam a2200109Ia 450000500170000000800410001708200210005824500770007926000270015630000160018365000170019920240821160617.0240821s9999||||xx |||||||||||||| ||und||  a640 NAT (TB-HIN) 0aManav paristhiki aur paribar vigyan: kaksha 11 ke liye pathypustak (HIN)  aNew DelhibNCERTc2018  axviii,376p.  aHome science