@article{219855, recid = {219855}, author = {Wang, Huai D.}, title = {A method of biomarker enrichment for natural gas condensates [microform] /}, publisher = {U.S. Dept. of the Interior, U.S. Geological Survey,}, address = {[Reston, Va.] :}, pages = {1 v. :}, year = {1995}, note = {Shipping list no.: 97-0319-M.}, url = {http://library.usi.edu/record/219855}, }