![W. H. van Dobben and R. H. Lowe-McConnel (editors): Unifying concepts in ecology. Report of the plenary sessions of the first international congress of ecology, The Hague, The Netherlands, September 8-14, 1974. — With 52 figs., 24 tables, 302 pp. The Hague: Dr. W. Junk B. V., Publishers 1975. ISBN 90 6193 174 6. Hfl. 75.—]()
W. H. van Dobben and R. H. Lowe-McConnel (editors): Unifying concepts in ecology. Report of the plenary sessions of the first international congress of ecology, The Hague, The Netherlands, September 8-14, 1974. — With 52 figs., 24 tables, 302 pp. The Hague: Dr. W. Junk B. V., Publishers 1975. ISBN 90 6193 174 6. Hfl. 75.—H. Caspers · 1977