TY  - BOOK
AU  - Linn,Robert M.
TI  - Proceedings of the First Conference on Scientific Research in the National Parks
T2  - Transactions and proceedings series-National Park Service
U1  - 333.783 23
PY  - 1979///
CY  - [Washington]
PB  - National Park Service
KW  - Natural history
KW  - Historia Natural
N1  - Incluye referencias bibliográficas
ER  -