Preface xi 



Additional support was given in Israel by a grant from the 

 United States Department of Agriculture under P.L. 480 and a 

 Ford Foundation grant for the study on resource allocation in ag- 

 ricultural research. 



Most of the studies reported in this volume were conducted as 

 joint projects. Some were done separately or in collaboration with 

 others. Specifically, we mention the contribution of Dyanatha 

 Jha, Rakesh Mohan, and Nira Shchori-Bachrach. 



Many individuals and agencies in the United States and other 

 countries supplied the data on agricultural research used in the 

 analysis of chapters 2, 4, and 5. Dr. M. Richens, editor of Plant 

 Breeding Abstracts, provided tabulated summaries of the publica- 

 tions abstracted in his periodical. 



We are indebted to our colleagues at Yale, particularly Richard 

 R. Nelson and Carlos Diaz-Alejandro, and to Zvi Griliches, Yujiro 

 Hayami, D. Gale Johnson, Hanna Lifson, Vernon Ruttan, 

 Shlomo Reutlinger, T. W. Schultz, Finis Welch, and numerous 

 others who participated in seminars and discussed our work. Dana 

 G. Dalrymple read an early version of the manuscript and made 

 many helpful comments. Robert P. Stone assisted in editing the 

 book. 



With pleasure we acknowledge the work of our research assis- 

 tants: James and Margaret Foorman, Louise Galasso, Douglas 

 Gauze, Michael Lopez, Ann Morgan, and Frank Westhoff. 



Our debt to Louise Galasso is twofold. In addition to giving 

 research assistance, she typed the manuscript and provided con- 

 siderable organizational and editorial assistance. 



Robert E. Evenson 

 New Haven, Connecticut 



Yoav Kislev 

 Rehovot, Israel 



