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Hadden et al., 1999. J. Agric. Food Chem., 10 (47): 4189-4194

Document reference 
Hadden, W. L. ; Watkins, R. H. ; Levy, L. W. ; Regalado, E. ; Rivadeneira, D. M. ; van Breemen, R. B. ; Schwartz, S. J., 1999. Carotenoid composition of marigold (Tagetes erecta) flower extract used as nutritional supplement. J. Agric. Food Chem., 10 (47): 4189-4194
Citation key 
Hadden et al., 1999