@misc{indiciae3aa4e8f10cd4, title = {Geochemistry of natural gas, North Slope, Alaska: Implications for gas resources, NPRA}, author = {Robert A. Burruss and Paul G. Lillis and Timothy S. Collett}, year = {2003}, doi = {10.3133/ofr0341}, url = {https://pubs.usgs.gov/publication/ofr0341}, note = {Source identifier: ofr0341} }