Bani, EphraimSimpson, JaneNash, DavidLaughren, MaryAustin, PeterAlpher, Barry2021-12-022021-12-02085883524XPL-512.477http://hdl.handle.net/1885/254045application/pdf© 2001 Ephraim Banihttp://creativecommons.org/licenses/by-sa/4.0The morphodirectional sphere200110.15144/PL-512.477 2021-12-02Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)