000 00320nam a22001457a 4500
003 OSt
020 _a81-220-0172-6
082 _a500
_bDIL/SC
100 _aDilip m salwi
245 _aScience teasers
260 _aNewdelhi
_bKonark publishers pvt ltd
_c1989
300 _a121
546 _aEnglish
942 _2ddc
_cREF
999 _c155446
_d155446