@book{20711,
	author = {International Food Policy Research Instt. Washington, D.C. and Alston, Julian M. and others.},
	title = {A meta-analysis of rates of return to agricultural R & D; expede Herculem ?},
	publisher = {The Auth.},
	year = {2000},
	series = {International Food Policy Research Instt., research report},
	address = {Washington, D.C.}
}