TY  - BOOK
ED  - United States.
TI  - Forestry in nature study: Issued by the Office of experiment stations in cooperation with the Forest service
T2  - U.S. Dept. of agriculture. Office of experiment stations. Special circular
AV  - SD252 .A2 1909
PY  - 1909///
CY  - Washington
PB  - Govt., print., off.
KW  - Nature study
N1  - "References": p. 8-10; Also available in digital form on the Internet Archive Web site
UR  - http://hdl.loc.gov/loc.gdc/scd0001.00028219015
ER  -