O'brien, P. Meyers, L.R.
A prognosis on world agriculture in the late 1980s Innovation in resource management: proceedings - Washington, D.C. (EUA) 1989 - p. 11-27
Tab.
A prognosis on world agriculture in the late 1980s Innovation in resource management: proceedings - Washington, D.C. (EUA) 1989 - p. 11-27
Tab.