na INLIS000000000003937 N 0010-0317003935 Gas chromatography : Analytical chemistry by open learning Willett, John New York : John Wiley & Sons 1991 xviii, 253 hlm. 24 cm 0471913324 543.089 6 Wil g 543.089 6 CROMATOGRAPHY, GAS 022992212 022992212