000 00360nam a2200145Ia 4500
008 231101s9999 xx 000 0 und d
082 _a500
_bBHA
100 _aBhatt, Krishna Rao
245 0 _aVigyan ki paheliyan
250 _a2nd ed.
260 _bAmbar Prakashan
_aNew delhi
_c1998
300 _a23p. p.
650 _aScientific riddles ;Hindi
942 _cHI
999 _c8453
_d8453