TY  - RPRT
TI  - Signature tests on 400-in3 water gun and 540-in3 air gun
AU  - D. R. Hutchinson
PY  - 1984
DO  - 10.3133/ofr84375
UR  - https://pubs.usgs.gov/publication/ofr84375
ID  - ofr84375
ER  -