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Cilt sonuçları
Grading land for surface irrigation
James C. Marr · Division of Agricultural Sciences, University of California
46 sayfa · 1954
Earthwork / Irrigation
Furrow irrigation
James C. Marr · Division of Agricultural Sciences, University of California
66 sayfa · 1967
Irrigation canals and flumes / Irrigation farming
Ecological studies in the Colorado alpine
John W. Marr, James C. Halfpenny · Institute of Arctic and Alpine Research, University of Colorado
147 sayfa · 1982
Mountain plants / Ecology / Mountain ecology
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