1. A manual on conservation of soil and water: handbook of professional agricultural workers
پدیدآورنده : United States Department of Agriculture
کتابخانه: Central Library and Information Center of Ferdowsi University of Mashhad (Khorasan Razavi)
موضوع : Handbooks, manuals, etc ، Soil conservation,Handbooks, manuals, etc ، Water conservation
رده :
S
623
.
M35
2. Manual of soil and water conservation practices
پدیدآورنده : Gurmel, Singh
کتابخانه: Central Library of Sharif University of Technology (Tehran)
موضوع : ، Soil Conservation-- India-- Handbooks, manuals, etc,، Water Conservation-- India-- Handbooks, manuals, etc
رده :
S
625
.
I47
.
G87
1990
3. Soil and water conservation handbook: policies, practices, conditions and terms
پدیدآورنده : Unger, Paul W.
کتابخانه: (Semnan)
موضوع : ، Soil conservation- United states -- Handbooks, manuals, etc,، Water conservation- United states- Handbooks, manuals, etc
رده :
S
624
.
U5S6
