1927 532 p., 93 figs, 68 (1 col.) pls, 15 maps, cloth spine over plain boards (original printed covers bound in), handwritten title on spine. Crudely bound and first pages loose. With author’s dedication (Bequaert).From the Library of Richard I. Johnson (1925-2020), malacologist and bibliophile, who build over a period of nearly six decades, what was perhaps the largest private library of books and journals on molluscs. With his stamp.