Yazar
Samuel P Hays
16 cilt bulundu.
Samuel P. Hays · Harvard University Press
297 sayfa · 1959
Conservation of natural resources / Environmental policy / History / Natural resources / Environnement
Samuel P. Hays · University of Chicago Press
210 sayfa · 1957
Social conditions / Economic conditions / Industries / 1865-1918 / Conditions sociales
Samuel P. Hays · Cambridge University Press
630 sayfa · 1987
History / Environmental protection / Environmental policy / Environmental law, united states / United states, environmental protection agency
Samuel P. Hays · University of Pittsburgh Press
532 sayfa · 1998
History / Government policy / Environmentalism / Environmental policy / Forest ecology
Samuel P. Hays · University of Pittsburgh Press
483 sayfa · 1989
Social conditions / Congresses / History / Pittsburgh (pa.), history / Pennsylvania, history
Samuel P. Hays · University of Pittsburgh Press
235 sayfa · 2009
United States. Forest Service / United States / Forest policy / History / Forests and forestry
Samuel P Hays · University of Pittsburgh Press
277 sayfa · 2007
Forest reserves / Political aspects of Forests and forestry / Forests and forestry / Forest management / Forest policy
Samuel P. Hays · University of Pittsburgh Press
272 sayfa · 2000
Environmentalism / Environmental policy / History / Environmental policy, united states / United states, environmental conditions
Samuel P. Hays · University of Tennessee Press
459 sayfa · 1980
Politics and government / Statistical methods / Study and teaching (Higher) / History / Etude et enseignement (Superieur)
Walter D. Burnham, William Gerald Shade, Samuel P. Hays · Abbey Publishing
279 sayfa · 1982
Political parties / Elections / History / Elections, united states