Valdemar Hercilio de Freitas. (2000). FAO soils bulletin; N77: Soil management and conservation for small farms; Strategies and methods of introduction, technologies and equipment; Experiences from the State of Santa Catarina, Brazil. Rome: FAO.
Chicago Style citaatValdemar Hercilio de Freitas. FAO Soils Bulletin; N77: Soil Management and Conservation for Small Farms; Strategies and Methods of Introduction, Technologies and Equipment; Experiences From the State of Santa Catarina, Brazil. Rome: FAO, 2000.
MLA citatieValdemar Hercilio de Freitas. FAO Soils Bulletin; N77: Soil Management and Conservation for Small Farms; Strategies and Methods of Introduction, Technologies and Equipment; Experiences From the State of Santa Catarina, Brazil. Rome: FAO, 2000.