||S. Vogel Life's Devices (1988)
||Life's Devices. The Physical World of Animals and Plants. Steven Vogel. Princeton University Press, Princeton, NJ, 1989. p.164 table 8.1
||P.164 bottom paragraph: "Even if you have no occasion to do specific calculations involving diffusive transport, it’s of interest to examine the relative values of diffusion coefficients, a few of which are given in Table 8.1. “Molecular weight” refers to the mass of a standard unit, approximately a hydrogen atom."