00482nam a2200193 a 4500 20260717091714.0 260717s1997 ii 000 0 eng d 8172361424 eng 500 Phondke, Bal How? Phondke, Bal New Delhi : NISC, 1997. 100 p.; ill. ; 23 cm. Q Series. Title No. 2. Science-Facts Science-Questions and answers BK 37314 37314 0 0 0 0 DC BKBCL BKBCL 1999-03-04 40.00 0 500 NISCAIR 38266 2026-07-17 09:17:14 40.00 2026-07-17 BK