Variation in the Maximun Depth at Which Fish Can Live During Summer in a Moderately Deep Lake with a Thermocline.
Washington DC: Government Printing Office, 1925. 8vo. 7 pp. Stamp to front cover, light soilng, light wrinkling. Bulletin of the Bureau of Fisheries, Vol. XLI, Document no. 970. Very Good Booklet (Item ID: 45908)