"Wheel Specifications for the Modeller" by Mike Sharman. My copy says it was published by Mike of Cricklade, Swindon, 1982. Maybe as it appears to be a privately published book, is the reason why there is no ISBN No.
Handy little book for anyone doing research for a model. Covers all the smaller railways, e.g. Gt. North of Scotland, Furness, Glasgow & South Western, Noth London as well as the biggies like GWR, LNWR, LMS.
Lists of Dias., no. of spokes on all the wheels including tenders and many other details.
John