Hilgard, E. Soils their formation, properties, composition and relations to climate and plant growth in the humid and arid regions. New York: 1918 XXVII, 593 p. : ill.
Hilgard, E. Soils their formation, properties, composition and relations to climate and plant growth in the humid and arid regions. New York: 1918 XXVII, 593 p. : ill.
Hilgard, E. (1918) Soils their formation, properties, composition and relations to climate and plant growth in the humid and arid regions, New York: XXVII, 593 p. : ill.
Hilgard, E. (1918). Soils their formation, properties, composition and relations to climate and plant growth in the humid and arid regions. New York: XXVII, 593 p. : ill.
Hilgard E. Soils their formation, properties, composition and relations to climate and plant growth in the humid and arid regions. New York: 1918. p. XXVII, 593 p. : ill.