000 00460nam a22001817a 4500
003 BD-DhUL
005 20140820104918.0
008 140820s1935 ii a|||| |||| 000 0 eng d
040 _aBD-DhUL
_cBD-DhUL
082 0 0 _a500
_bARN
100 1 _aDutta, Arun Kumar.
245 1 _aNatural science
_cArun Kumar Dutta
250 _a2nd ed.
260 _aCalcutta :
_bGuota,
_c1935.
300 _avi, 127 p. :
_bill. ;
_c19 cm.
650 0 _aScience
942 _2ddc
_cBK
999 _c4282
_d4282