by Letcher, T. M. (Trevor M.) | ProQuest (Firm).
by Letcher, T. M. (Trevor M.) | Vallero, Daniel A.
by Letcher, T. M. (Trevor M.) | Royal Society of Chemistry (Great Britain) | ProQuest (Firm).
by Wilhelm, Emmerich | Letcher, T. M. (Trevor M.) | Royal Society of Chemistry (Great Britain) | ProQuest (Firm).
by Letcher, T. M. (Trevor M.).
by Letcher, T. M. (Trevor M.) [editor.] | Abiodun, Babatunde J [contributor.].
by Letcher, T. M. (Trevor M.) [editor.].