Ecology of Agricultural Ecosystems : Long-Term Research on the Path to Sustainability Hamilton, Stephen K. Doll, Julie E. Robertson, G. Philip 9780199773350 Innbundet 12.03.2015 Engelsk Produseres på bestilling
Standard Soil Methods for Long-Term Ecological Research Bledsoe, Caroline S. Sollins, Phillip Robertson, G. Philip Coleman, David C. 9780195120837 The Long-Term Ecological Research Network Series Innbundet 04.11.1999 Engelsk Midlertidig utsolgt
