00553cam a22001814a 4500 0896291162 (pbk.) DLC 338 INT 2000 C134 Or. A meta-analysis of rates of return to agricultural R&D : ex pede Herculem? / Washington, D.C. : International Food Policy Research Institute, c2000. x, 148 p. : ill. ; 26 cm. Research report ; Agriculture Agriculture Rate of return. Alston, Julian M. AEDBB 18398 18398 0 0 0 338_000000000000000_INT_2000_C134_OR 0 82384 LBC LBC C143 2019-11-18 A38278 338 INT 2000 C134 Or. 2019-11-18 2019-11-18 AEDBB