Col. map (fold. sheet) in pocket.
The sand and gravel resources of the country around Maidenhead and Marlow : description of 1:25000 resource sheet SU 88 and parts SU 87, 97 and 98 by P. N. Dunkley. ISBN 0118840916. Published by H.M.S.O. in 1979. Publication and catalogue information, links to buy online and reader comments.