1. The study of soil in the field
Author: Clarke, George Robin
Library: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)
Subject: Soil - Surveys
Classification :
S
591
.
C6
1971
2. The study of the soil in the field
Author: Clarke, George Robin.
Library: Central Library of Agricultural (Tehran)
Subject: $ASoils$BResearch,$ASoil surveys
Classification :
S
591
.
C6
1957
