Penning de Vries F. W. T.

title	ISBN-13 (ISBN-10)	year of publica- tion	other author(s)
Theoretical Production Ecology: Reflections and Prospects	978-9O-22O-1OO4-4 (9O-22O-1OO4-X)	1990	R. Rabbinge · J. Goudriaan · H. van Keulen · H.H. van Laar