00317nam a2200121 4500 661 MAN Manual of Chemical Industries... Manual of Chemical Industries in Sri Lanka Part 1 Ichemc Unesco 1986 267p manual,chemical industries,ichemc BK 751 751 0 0 0 NFIC IC IC GEN 2015-05-26 4 661 MAN 001930 2022-11-17 00:00:00 2016-02-06 2015-05-26 BK