TY  - RPRT
TI  - Hydrates of natural gas; a review of their geologic occurrence
AU  - Keith A. Kvenvolden
AU  - Mark A. McMenamin
PY  - 1980
DO  - 10.3133/cir825
UR  - https://pubs.usgs.gov/publication/cir825
ID  - cir825
ER  -