3
Έκδοση 1980
Θέματα: ...Agricultural education Periodicals....
Available in Education Source.
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
4
Θέματα: ...Agriculture United States Periodicals....
Full text available from Agricultural Science Database: 06/10/2010 to present
Full text available from Career & Technical Education Database: 06/10/2010 to present
Full text available from Research Library: 06/10/2010 to present
Ηλεκτρονική πηγή Εφημερίδα
7
Έκδοση 1986
Θέματα: ...Agriculture Economic aspects United States Periodicals....
Full text available from Agricultural Science Database: 09/01/2004 to 09/15/2008
Full text available from Engineering Database: 09/01/2004 to 09/15/2008
Full text available from Environmental Science Database: 09/01/2004 to 09/15/2008
Full text available from Research Library: 09/01/2004 to 09/15/2008
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
8
Έκδοση 2000
Full text available from Advanced Technologies & Aerospace Database: 10/01/1999 to present
Full text available from Agricultural Science Database: 10/01/1999 to present
Full text available from Career & Technical Education Database: 10/01/1999 to present
Full text available from Engineering Database: 10/01/1999 to present
Κυβερνητικό Έγγραφο Ηλεκτρονική πηγή Επιστημονικό περιοδικό
9
Full text available from Agricultural Science Database: 12/01/2003 to 07/31/2006
Full text available from Research Library: 12/01/2003 to 07/31/2006
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
12
Έκδοση 1985
Full text available from Agricultural Science Database: 11/01/1995 to 11/30/2010
Full text available from Research Library: 11/01/1995 to 11/30/2010
Ηλεκτρονική πηγή Επιστημονικό περιοδικό
13
Έκδοση 1937
Full text available from ABI/INFORM Trade & Industry: 2005 to present
Full text available from Agricultural Science Database: 2005 to present
Ηλεκτρονική πηγή Επιστημονικό περιοδικό