00384nam a2200121Ia 450000500170000000800410001708200150005810000580007324500600013126000270019130000090021865000350022720240821160441.0240821s9999||||xx |||||||||||||| ||und||  a510 NAT(U)  aNational Council of Educational Research and Training 0aRiyazi (mathematics): book 1 for primary schools (URDU)  aNew DelhibNCERTc1982  a76p.  aMathematics - Textbook - NCERT