1. Ravine lands :
Author: Jagdish Chander Dagar, Anil Kumar Singh, editors.
Library: Center and Library of Islamic Studies in European Languages (Qom)
Subject: Ravines.,Soil conservation.,Soil erosion.,Soil restoration.,Agriculture.,Climatic changes.,Conservation biology.,Ecology.,Environmental management.,Ravines.,Soil conservation.,Soil science.,Sustainable development.,TECHNOLOGY & ENGINEERING-- Agriculture-- General.
Classification :
S591
2. Soil as world heritage
Author: edited by David Dent
Library: Library and Documentation Center of Kurdistan University (Kurdistan)
Subject: ، Soil biology,، Soil ecology,، Soil management,، Soils
Classification :
S591
