The comparative economics of alternative agricultural production systems: An annotated bibliography / Glenn Fox ... [et al.]. -- Guelph : University of Guelph, 1991. -- 68 s. -- (Working Papers Series 91/2. Department of Agric. econ. and business). poľnohospodárstvo alternatívne * ekonomika poľnohospodárska * ekonomika porovnávacia * bibliografie poľnohospodárske