TY - BOOK AU - Dev,R. AU - Kumar,R.P. AU - Narang,K.C. TI - Workshop calculations and science (Welder, moulder, sheet metal, carpenter, plumber, painter, blacksmith, upholstery) U1 - 621.75 PY - 0000///[19-?] CY - New Delhi PB - New Heights KW - workshops KW - Mensuration KW - Metals KW - Electricity KW - Heat KW - Materials ER -