Yazar
a n duckham
6 cilt bulundu.
Cilt sonuçları
Food production and consumption
A. N. Duckham, E. H. Roberts · American Elsevier Pub. Co.
541 sayfa · 1976
Cycles biogeochimiques / Alimentation / Nutrition / Voeding / Bioenergetique
The farming year; agricultural synthesis
A. N. Duckham · Chatto & Windus
525 sayfa · 1963
Agriculture / Crops and climate / Economic aspects / Economic aspects of Agriculture / Farm management