ISBN 0801837936 books & textbook
Variability in Grain Yields: Implications for Research and Policy in Developing Countries (International Food Policy Research Institute)
Anderson, Professor Jock R. Hazell, Professor Peter B. R.
International Food Policy Research Institute /1989-06-01 Hardcover / 416 Pages
isbn-10: 0801837936 / isbn-13: 9780801837937
