Sears, Paul Bigelow
Deserts on the March / Paul Bigelow Sears - 2nd ed. - Norman : Oklahoma University Press , 1947 - xi, 178p. ; 24 cm.
Natural resources
Economic conditions
Economic aspects
Agriculture
630 / SEA
Deserts on the March / Paul Bigelow Sears - 2nd ed. - Norman : Oklahoma University Press , 1947 - xi, 178p. ; 24 cm.
Natural resources
Economic conditions
Economic aspects
Agriculture
630 / SEA