TY - RPRT TI - Modern biogenic gas-generated craters (sea-floor “pockmarks”) on the Bering Shelf, Alaska AU - Nelson C. Hans AU - D.R. Thor AU - Mark W. Sandstrom AU - Keith A. Kvenvolden PY - 1979 DO - 10.1130/0016-7606(1979)90<1144:mbgcsp>2.0.co;2 UR - https://pubs.usgs.gov/publication/70208415 ID - 70208415 ER -