TY  - RPRT
TI  - A modification of the line intercept method of sampling understory vegetation
AU  - T.H. Ripley
AU  - F.M. Johnson
AU  - W.H. Moore
PY  - 1963
DO  - 10.2307/3895028
UR  - https://pubs.usgs.gov/publication/5220320
ID  - 5220320
ER  -