1. Farming systems development and soil conservation
Author: David Norman, Malcolm Douglas
Library: Central Library and Information Center of Shahed University (Tehran)
Subject: Agricultural systems,Soil conservation
Classification :
S
،
494
،.
S95
,
N675
،
1994
2. Farming systems development and soil conservation
Author: /D W Norman; Malcolm Douglas
Library: National Library and Archives of Islamic Republic of Iran (Tehran)
Subject:
