000 00344nam a2200145Ia 4500
008 140317s9999 xx 000 0 und d
082 _a500
100 _aPattak,Udaykant
245 _aVigyan ke Chamtkar
260 _aDelhi
_bGurukul Vidhyapeet Prakashan
_c2002
300 _a160
650 _aScience
653 _aVigyan
942 _2ddc
_cBK
999 _c15189
_d15189