00454 a2200169 4500 9556120610 338.23 AGR 24196 39550 Agricultural commodity prices 1997-2003 Colombo Hector Kobbekaduwa Argarian Research and Training Institute x,96p. 29cm Production Economics Extraction of minerals Financial aspects L 51336 51336 0 0 0 0 LEN MKDL MKDL LEN 2009-09-07 0 338.23AGR 59363 2009-09-07 00:00:00 0.00 2016-10-31 L