1 “... the publication an excellent reference book about the world's soils. About the Authors Wolfgang Zech is professor...”

2 “... and the meaning of the term ‘terroir’. The editor, Dr. Percy H. Dougherty, is Professor Emeritus at Kutztown...”

3 “...Johannsen, Professor Emeritus of Agronomy, Department of Agronomy, Purdue University, West...”

4