A bulletin on conservation of natural resources.
By: Department of Education, the State of Colorado, Inez Johnson Lewis, State Superintendent of Public Instruction.
Published: 1940
Place of publication: [Denver
Language: eng
Number of pages: 136
Subjects: Conservation of natural resources -- Colorado.; Colorado -- Economic conditions.
Other titles: Colorado's wealth.
Notes: "Literature cited": p. 136.
On cover: Colorado's wealth.