TY - SER AU - Teles,F.F.F. AU - Price,R.L. AU - Whiting,F.M. AU - Reid,B.L. TI - Circadian variation of non-volatile organic acids in the prickly pear (Opuntia ficus indica L.) KW - Figueira da Barbaria KW - Acido Organico KW - Cromatografia ER -