Annual meeting of the American Society of Agronomy Washington, D. C., Smith, D. C., Breth, S. A., & Stelly, M. (1968). Food for billions: Papers. Wisconsin, Estados Unidos: American Society of Agronomy.
Citación estilo ChicagoAnnual meeting of the American Society of Agronomy Washington, D. C., D. C. Smith, Steven A. Breth, y Matthias Stelly. Food for Billions: Papers. Wisconsin, Estados Unidos: American Society of Agronomy, 1968.
Cita MLAAnnual meeting of the American Society of Agronomy Washington, D. C., D. C. Smith, Steven A. Breth, y Matthias Stelly. Food for Billions: Papers. Wisconsin, Estados Unidos: American Society of Agronomy, 1968.
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