At head of title: Institute of Geological Sciences.
Map (1 folded sheet) in pocket.
The sand and gravel resources of the country between Ely and Cambridge, Cambridgeshire : description of 1:25000 sheets TL56 and 57 by A. R. Clayton. ISBN 0118841734. Published by H.M.S.O. in 1981. Publication and catalogue information, links to buy online and reader comments.