1980. The Solent Estuarine System. An Assessment of Present Knowledge. N.E.R.C publications Series C, No. 22. iv + 100 pp., numerous illustrations. Swindon: Natural Environment Research Council Price not known. ISSN 0140-9611. - D. V. Frost & J. G. O. Smart 1979. Geology of the Country North of Derby. Memoir for 1:50000 geological sheet 125. xiv + 199 pp., 89 figs, 13 plates. London: H.M.S.O. Price £18.00. ISBN 0 11 884119 X.