000 00310nam a22001337a 4500
020 _a9788131797297
082 _a681.3 FOL
100 _aFolk J Michael
245 _aFile Structures
260 _aNew Delhi
_bPearson
_c2013
300 _a861
650 _aPrecision instruments & other devices
942 _cBK
999 _c7644
_d7644