Conservation of natural resources.
By: George M. Rommel ... chairman.
Contributors: Rommel, George McCullough, 1876-1945.
Series: Its Proceedings. Section III.; vol. III
Publisher: Govt. print. off.
Published: 1917
Place of publication: Washington
Language: eng
Number of pages: 947
Subjects: Natural resources -- Congresses.
Genres: Congresses.
Notes: Most of the plates printed on both sides.
Contributions in English or Spanish (one in French)