Marion Clawson / R. Burnell Held
Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
This book reviews and evaluates the nationwide soil conservation effort in the United States and suggests broad outlines of a future conservation program.Originally published in 1965