Symposium on Two Centuries of American Agriculture, 1775-1975 Smithsonian Institution, Agricultural History Society, Washington, D.C, Smithsonian Institution, United States. Department of Agriculture, & Wiser, V. (1976). Two centuries of American agriculture. Agricultural History Society.
Cita Chicago Style (17a ed.)Symposium on Two Centuries of American Agriculture, 1775-1975 Smithsonian Institution, Washington Agricultural History Society, Smithsonian Institution, United States. Department of Agriculture, y Vivian Wiser. Two Centuries of American Agriculture. Washington: Agricultural History Society, 1976.
Cita MLA (8a ed.)Symposium on Two Centuries of American Agriculture, 1775-1975 Smithsonian Institution, et al. Two Centuries of American Agriculture. Agricultural History Society, 1976.