Purcell et al., 1972. J. Am. Soc. Hort. Sci., 97 (1): 30-33 Document reference Purcell, A. E. ; Swaisgood, H. E. ; Pope D. T., 1972. Protein and amino acid content of sweet potato cultivars. J. Am. Soc. Hort. Sci., 97 (1): 30-33Web http://www.ncsu.edu/foodscience/USDAARS/Acrobatpubs/S1-30/S23.pdfCitation key Purcell et al., 1972Datasheets Sweet potato (Ipomoea batatas) tubers
