Kirton, Jean F.Glasgow, D.Glasgow, K.Kirton, J.Oates, W.Sommer, S. A.Sommer, E. G.2021-12-022021-12-02085883015XPL-A10.15http://hdl.handle.net/1885/254247application/pdf© 1967 Jean F. Kirtonhttp://creativecommons.org/licenses/by-sa/4.0196710.15144/PL-A10.15 2021-12-02Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)