Agricultural Research Institute of Ontario

Vysoká škola zemědělská v Praze. Agronomická fakulta

Technical Association of the Pulp and Paper Industry

von Ludwig Jost

introduction and notes by Henry Norman Hudson ; edited and revised by Ebenezer Charlton Black ; with the coöperation of Andrew Jackson George

by Vernon L. Kellogg ; with the partial collaboration of Ruby Green Smith

American Association of Economic Entomologists

by G.S. Newth

ed. for study by L. M. Munger with a biographical introduction by Susan M. Francis

the California Agricultural Extension Service, College of Agriculture, University of California

by Walter Scott ; edited with an introduction and notes for the use of students by George B. Aiton

Food and Agriculture Organization of the United Nations

Orszagos Agrobotanikai Intenet Fajtagyujtemenye

Biologische Bundesanstalt für Land- und Forstwirtschaft in Berlin und Braunschweig

Agricultural and Home Economics Experiment Station, Iowa State College

edited with an introduction, notes, and suggestive questions by George W. Hufford and Lois G. Hufford

edited by James Pryde

材料技術資料センター

by T.W. Sanders

by M. Horace Hayes

University of Washington. College of Forest Resources

Botanical Society of America

Univerzitet u Beogradu, šumarskog fakulteta