Olbrich, Roland; Quaas, Martin F.; Baumgärtner, Stefan - 2009
sustainability. To gather this information for an important ecological-economic system, we conducted a survey of commercial cattle … description of the research aims, design and conduction of the survey, and analyze and discuss the homogeneity and … representativeness of our survey population. The survey consisted of a mail-in questionnaire and in-field experiments. We combined two …