1
Έκδοση 1969
“...Southern Agricultural economics Association....”
Επιστημονικό περιοδικό
2
Έκδοση 1993
“...Southern Agricultural Economics Association....”Full text available from ABI/INFORM Global: 04/01/2002 to 1 year ago
Full text available from Agricultural Science Database: 04/01/2002 to 1 year ago
Full text available from Engineering Database: 04/01/2002 to 1 year ago
Ηλεκτρονική πηγή
Επιστημονικό περιοδικό
