Yazar
Peter Helmberger
8 cilt bulundu.
Peter G. Helmberger · McGraw-Hill
300 sayfa · 1991
Agricultural subsidies / Agriculture / Agriculture and state / Economic aspects / Economic aspects of Agriculture
Peter G. Helmberger, Jean-Paul Chavas · Prentice Hall
320 sayfa · 1995
Agricultural prices / Agriculture / Economic aspects / Economic aspects of Agriculture / Agriculture, economic aspects
Peter Helmberger · M Press, Martin Meidenbauer Verlagsbuchhandlung
346 sayfa · 2008
Church and state / Church work with youth / Partei des Demokratischen Sozialismus (Germany) / Church and state, germany / Church history
Peter G. Helmberger · University of California, Division of Agricultural Sciences
234 sayfa · 1965
Vegetable trade / Cooperative marketing of farm produce / Fruit trade