1. Adventure Tourism
Author:
Library: Central Library and Documents Center of Mazandaran University (Mazandaran)
Subject: Environmental geography. ; Environment. ; Physical geography. ; Environmental management. ; Environmental Geography. ;
2. Sustaining groundwater resource a critical element in the global water crisis
Author: J. Anthony A. Jones
Library: Library and Documentation Center of Kurdistan University (Kurdistan)
Subject: ، Water-supply, Economic aspects,، Sustainable development,، Environmental sciences,، Hydraulic engineering,، Physical geography,، Environmental pollution,، Environment,، Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution,، Hydrogeology
Classification :
TC
409
.
S87
2011eb
