KERSHAW, K. A; K. L. Alvin. The Observer's Book of Lichens. London: Frederick Warne & Co. Ltd., 1966.
12mo., pale yellow boards, upper cover and backstrip lettered in mint green; original clipped jacket; pp. viii, 126, [ii]; the odd spot, and upper edge a trifle dusty, internally very bright; jacket with some splash marks to spine; slightly shelf worn and soiled, with the odd small nick.
U.S. reprint, with 64 plates in colour, black and white. A compact pictorial guide to the commoner and more conspicuous lichens with notes on reproduction, habitats and examination.