1990 30 p., 18 figs, 4to, wrappers. We added two other papers on crinoids by Messing, and Hoggett, 1986. A reappraisal of the family Comasteridae (40 p., 3 figs), and Clark, 1909. New Recent Crinoids from the Indian Ocean (11 p.).
1890-1903 19, 30, 16, 54 p., 5 figs, 4, 1 lithographed pls, disbound (no covers). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1908-1911 36, 60, 78 p., 51 figs, 5 pls, disbound (partly loose). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1911 78 p., 25 figs, disbound. Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1897 71 p., 1 plate, disbound (no covers). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1897 94 p., 1 folded plate, disbound (no covers). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1889-1891 17, 13, 12,42 p., 1, 1, 1 lithographed pls, disbound (no covers). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1922 72 p., 22 figs, roy. 4to, paperbound. Unopened copy. Capita Zoologica.
1914 47, 44, 6 p., 30 figs, 1 folded plate, disbound (no covers). We included one smaller paper. Published in Jahrbuch der Hamburg. Wissenschaftl. Anstalten.
1910 123 p., 26 figs, 1 folded plate, disbound (partly loose). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1910 123 p., 26 figs, 1 folded plate, disbound (partly loose). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1904 124 p., 1 fig. 2 (1 double) pls, 1 map, disbound (front cover journal added loose). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1899 122 p., 22 figs, disbound (partly loose). Published in: Mitteilungen aus dem Naturhistorischen Museum in Hamburg.
1915 Paris, 1915 : In-8 Raisin, Broché. tiré-à-part, pp. 23-42, 1 planche N&B in-fine, Très bon état, Couv. fraîche, Dos impeccable, Non coupé.
1916 23 p., 4 (2 lithographed) pls, roy. 4to, disbound (no covers). Published in: Denkschriften der Kaiserlichen Akademie der Wissenschaften (Wien).
1957 71 p., 15 figs, paperbound. Published in: Annals of the South African Museum. Library stamp (Zoologisch Museum Amsterdam).
1970-1978 71 p., num. figs, wrappers. Published in: Annals of the South African Museum.
1960 159 p., 72 figs, 6 pls, large 4to, hcloth (original printed front cover laid on). Library stamps (Zoologisch Museum Amsterdam).
1967 xiv, 240 p., num. figs, 53 col. pls, cloth (dust jacket). Library stamps (Zoologisch Museum Amsterdam).
1877 20 p., 2 lithographed pls, roy. 4to, disbound (no covers). Published in: The Transactions of the Linnean Society of London.
1903 20 p., 3 lithographed pls, disbound (no covers, partly loose, inner margin first 4 pages chipped). Unopened copy. Published in: Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften.
1983 107 p., 27 figs, paperbound. Thesis.
1889 68 p., contemporary hcalf (original printed covers bound in). With author's dedication. Published in: Revue Biologique du Nord de la France.
1965 vi, 154 p., 37 figs, 10 pls, frontispiece, paperbound. Thesis. Mint unopened copy, as new.
1955 398, [1] p., num. figs, hcloth. In Russian. Library stamp. Includes two papers on fish parasites. Second paper mainly on Monogenoidea.