Intensified systems of farming in the tropics and subtropics /
J.A. Nicholas Wallis.
- Washington, D.C. : World Bank, c1997.
- xiii, 203 p. : ill., maps ; 28 cm.
- World Bank discussion paper, no. 364 0259-210X ; .
- World Bank discussion papers ; 364. .
Includes bibliographical references (p. [167]-195).