Add to ORKGConservation and economic theory, by R. T. Ely.--Conservation and economic evolution, by R. H. Hess.--Conservation of certain mineral resources, by C. K. Leith.--Conservation of human resources, by T. N. Carver.Mode of access: Internet
"Humboldt library of popular science literature, no. 7, Jan. 1881".Mode of access: Internet
Part II issued by the National resources planning board.I. Basic characteristics. A report prepared ...
"Note on further reading": p. 163-164.Introduction.--The making of wealth.--The wealth of the indivi...
The expansion of an article contributed to a volume published in 1917 entitled The foundations of na...
"The teacher's bibliography" at end of each chapter. "General materials for conservation education":...
Published in 1957 under title: Economic problems of natural resource use.Mode of access: Internet
Pub. also in Normal college news, v.2, no.5, 1905.Reprinted from the 7th annual report of the Michig...
Mode of access: Internet.Issued by the National Conservation Commission.BIOS; HC106.P3: v.1-3, 7 ana...
Includes extracts from letters, addresses, newspaper and magazine articles, etc., etc.1st ed., 1909....
"Authors, editions, and sources quoted": p. 665-671.Protection.--Taxation.--The natural tax.--Progre...
Vol. 1, no. 26-v. 2 have subtitle: "Conservation development."Mode of access: Internet.Vols. 1-2, Ma...
Prepared by the National 4-H Developmental Committee on Conservation of Natural Resources.Cover titl...
"Reprinted from Economic geology, vol. 46, no. 6, pp. 563-577, September-October, 1951."Bibliography...
"Reprinted for the Committee, 1921, with the aid of the National research council."Mode of access: I...
Vol. 4 has title: Observations on the subjects treated of in Dr. Smith's Inquiry into the nature and...
"Humboldt library of popular science literature, no. 7, Jan. 1881".Mode of access: Internet
Part II issued by the National resources planning board.I. Basic characteristics. A report prepared ...
"Note on further reading": p. 163-164.Introduction.--The making of wealth.--The wealth of the indivi...
The expansion of an article contributed to a volume published in 1917 entitled The foundations of na...
"The teacher's bibliography" at end of each chapter. "General materials for conservation education":...
Published in 1957 under title: Economic problems of natural resource use.Mode of access: Internet
Pub. also in Normal college news, v.2, no.5, 1905.Reprinted from the 7th annual report of the Michig...
Mode of access: Internet.Issued by the National Conservation Commission.BIOS; HC106.P3: v.1-3, 7 ana...
Includes extracts from letters, addresses, newspaper and magazine articles, etc., etc.1st ed., 1909....
"Authors, editions, and sources quoted": p. 665-671.Protection.--Taxation.--The natural tax.--Progre...
Vol. 1, no. 26-v. 2 have subtitle: "Conservation development."Mode of access: Internet.Vols. 1-2, Ma...
Prepared by the National 4-H Developmental Committee on Conservation of Natural Resources.Cover titl...
"Reprinted from Economic geology, vol. 46, no. 6, pp. 563-577, September-October, 1951."Bibliography...
"Reprinted for the Committee, 1921, with the aid of the National research council."Mode of access: I...
Vol. 4 has title: Observations on the subjects treated of in Dr. Smith's Inquiry into the nature and...
"Humboldt library of popular science literature, no. 7, Jan. 1881".Mode of access: Internet
Part II issued by the National resources planning board.I. Basic characteristics. A report prepared ...
"Note on further reading": p. 163-164.Introduction.--The making of wealth.--The wealth of the indivi...