TY  - RPRT
TI  - A strategy to inventory the biological resources of the national park system of the USA
AU  - M.A. Ruggiero
AU  - T.J. Stohlgren
AU  - G.S. Waggoner
PY  - 1992
UR  - https://pubs.usgs.gov/publication/70127589
ID  - 70127589
ER  -