Eagar, R. M. C. (1952). Growth and variation in the non-marine lamellibranch fauna above the Sand Rock Mine of the Lancashire Millstone Grit. Quarterly Journal of the Geological Society. 107(4): 339-373.
Growth and variation in the non-marine lamellibranch fauna above the Sand Rock Mine of the Lancashire Millstone Grit
Quarterly Journal of the Geological Society
107(4): 339-373
Publication
year given as "1951" on publisher's webpage, but from the content it is obvious that the issue must have been published after Sept. 1952 (see author's note on p. 367)