Bhanthumnavin et al., 1971. Nature, 232: 495 Document reference Bhanthumnavin, K. ; McGarry, M. G., 1971. Wolffia arrhiza as a possible source of inexpensive protein. Nature, 232: 495Web http://dx.doi.org/10.1038/232495a0Citation key Bhanthumnavin et al., 1971Datasheets Duckweed