![](/img/cover-not-exists.png)
Causal Relationships between Public Sector Agricultural Research Expenditures and Output
Philip G. Pardey and Barbara CraigVolume:
71
Language:
english
Journal:
American Journal of Agricultural Economics
DOI:
10.2307/1241770
Date:
February, 1989
File:
PDF, 929 KB
english, 1989