000 00299nam a2200121Ia 4500
008 220201s1968 xx 000 0 eng d
082 _bISI
100 _aISI
245 0 _aSpecification for concrete porous pipes for under drainage
260 _aNew Delhi
_bISI
_c1968
300 _a13
942 _2ddc
999 _c20169
_d20169