00574 a2200169 4500 56544 56544 WUSLLib 170123b xxu||||| |||| 00| 0 eng d 9789553027429 Sinhala 665.776 WIJ විජේතුංග, එස්. 2382 ජීවවායු තාක්‍ෂණය = Biogas technology සිද්ධාන්ත සහ භාවිතය කොළඹ 10 එස්. ගොඩගේ 2011 2011 248p. 22cm. BIO GAS TECHNOLOGY 1964 L ddc 0 0 ddc 0 0 LEN MKDL MKDL LEN 2014-03-28 2 665.776WIJ 67163 2019-11-04 00:00:00 2019-10-25 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2014-07-04 0 665.776WIJ 35706 2017-08-30 00:00:00 0.00 2016-10-31 L 0 0 0 0 LEN MAIN MAIN LEN 2014-07-04 0 665.776WIJ 35707 2017-08-30 00:00:00 0.00 2016-10-31 L