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Published 1999
Full text available from Agricultural Science Database: 01/01/1971 to 12/31/1974Full text available from Latin America & Iberia Database: 01/01/1971 to 12/31/1974
Full text available from Agricultural Science Database: 01/01/1976 to 10/31/2018
Full text available from Latin America & Iberia Database: 01/01/1976 to 10/31/2018
Electronic
Serial
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12
Published 1978
Full text available from Earth, Atmospheric & Aquatic Science Database: 01/01/2002 to present
Electronic
Serial
13
14
Full text available from Social Science Database: 07/01/1998 to 01/31/2011
Full text available from PRISMA Database with HAPI Index: 07/01/1998 to 12/31/2000
Full text available from PRISMA Database with HAPI Index: 01/01/2002 to 01/31/2011
Electronic
Serial
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Full text available from Latin America & Iberia Database: 06/01/2008 to present
Full text available from PRISMA Database with HAPI Index: 06/01/2008 to present
Full text available from Research Library: 06/01/2008 to present
Full text available from PRISMA Database with HAPI Index: 06/01/2008 to 12/31/2013
Full text available from PRISMA Database with HAPI Index: 01/01/2015 to 07/31/2016
Electronic
Serial