"The Enzyme activities of Pectinol A on pectin and other substances."; "Dustman, Robert B. (Robert Barclay), 1892-", "Fish, Velmer B."; "Pectin."; "Fish, Velmer B.", "Dustman, Robert B. (Robert Barclay), 1892-"; "1945"; "Journal article reprint from: Journal of the American Chemical Society, 67 (1945)."; ""; "P17778"; "pec"; "Pectin."; "14256"; .