000 00347nam a2200133Ia 4500
100 _aNational Council of Educational Research and Training
365 _b5.05
942 _cBK
654 _a
245 _aIntroduction to plumbing
260 _bNational Council for Educational Research and Training
_c1987
082 _a644.6
300 _bPb
_a24
999 _c404141
_d404141
041 _aeng