1. Agricultural development: soil, food, people, work
Author: / by Charles E. Kellogg
Library: Central Library and Information Center of the University of Mohaghegh Ardabili (Ardabil)
Subject: Agriculture,Agriculture - Developing countries,Soil science
Classification :
S493
.
K44
1975
2. The soils that support us
Author: / by charles E. Kellogg,Kellogg
Library: Central Library and Documents Center of Tehran University (Tehran)
Subject: Soils,Soils - classification
Classification :
S
591
.
K425
