TY  - RPRT
TI  - Reply to Kuenen's letter
AU  - H. S. Ladd
AU  - J. I. Tracey
PY  - 1958
DO  - 10.1016/s0146-6291(58)80013-2
UR  - https://pubs.usgs.gov/publication/70212088
ID  - 70212088
ER  -