1. #Our soils and their management
پدیدآورنده : #by Roy L. Donahue
کتابخانه: Central Library of Esfehan University of Technology (Esfahan)
موضوع : Soil science ،Soil management ،Crops and soils ،Water conservation
رده :
#
S
،#.
D65
،#
1961
2. Our soils and their management (increasing production through soil and water conservation)
پدیدآورنده : by Roy L. Donahue
کتابخانه: Central Library and Information Center of Shahed University (Tehran)
موضوع : Soil science,Soil management,Crops and soils,Water conservation
رده :
S
،
591
،.
D65
،
1970
3. #Soils
پدیدآورنده : #]by[ Roy L. Donahue, John C. Shickluna ]and[ Lynn S. Robertson
کتابخانه: Central Library of Esfehan University of Technology (Esfahan)
موضوع : Soil science ،Crops and soils ،Soil management
رده :
#
S
،#.
D653
،#
1971
4. The range and pasture book
پدیدآورنده : ]by[ Roy L. Donahue, Everett F. Evans ]and[ L.I. Jones
کتابخانه: Library of Faculty of Social Sciences of Tehran University (Tehran)
موضوع : Pastures,Forage plants- United States
رده :
SB
199
.
D58
1956
