18028. Erhorn, Irmgard. Kaukasien. [Berlin, O. Stollberg] 1942, Neue, verbesserte Auflage, 82pp. fold. map. 21 cm, white sewn paper wraps, heavy foxing on rear cover, rear cover soiled, lower corner of last twenty pages clipped, internally sound reading copy only, $7
Die Bücherei des Ostraumes. Georgien, Aserbeidschan, Armenien, Nordkaukasien.

22988. Gage, William L., 1832-1889. The Life of Carl Ritter. Late Professor of Geography in the University of Berlin. New York: Charles Scribner and Co., 1867, 242pp., very good small green cloth, ex-library with paper spine label and stamps but generally quite clean and presentable, previous owner's name M. A. Hawley, $30
Ritter: 1779-1859. Gage had translated several of Ritter's works, on comparative geography and had attended his lectures.

15477. Harvard University. Library / Nelken, Halina. Humboldtiana at Harvard : catalogue prepared by Halina Nelken. Cambridge, Mass.: Harvard University, 1976, 101pp. : ill., facsims., ports. (1 col.) . 23 cm, PAPERBACK, very good with Humboldt silhouette on cover, INSCRIBED by Halina Nelken to Philip J. McNiff, Director of the Boston Public Library. $100
Includes essays by Peter Schoenwaldt, "Alexander von Humboldt and the United States," and Halina Nelken, "Humboldt and Art," as well as many full-page illustrations, including title pages, and short excerpts from books and letters concerning Humboldt.

21971. Humboldt, Wilhelm von. Kosmos. Entwurf einer physischen Weltbeschreibung. Stuttgart Tübingen, Cotta, 1845-1858, xvi, 493, 544, 644, 649pp., good but worn private 19th century 3/4 leather, quite scuffed around edges and with wear to hinges, tape repair at top of spine on volume 4, some light foxing, but paper quite well preserved. Worn but good copies of four volumes, $100
Four volumes: 1845, 1847, 1850, 1858. NOT present are volume 5 and the Atlas.

12025. Johnston, R. J. / Peter J. Taylor, ed.. A World in crisis?: geographical perspectives. Oxford: Oxfordshire]. New York, N.Y.: B. Blackwell, 1986, viii, 308pp. : maps. 24 cm., very good dust-jacket, very good black cloth, $15
.

27309. Kaiser, Ernst, 1885-. Landeskunde von Thüringen. Hrsg. im Auftrag der Akademie gemeinnütziger Wissenschaften zu Erfurt. Erfurt, Stenger, 1933, 478pp., good but worn illustrated white cloth but ex-library with call number label, some light foxing, LACKING rear fold-out map, with stamps from Wirtschaftswissenschaftliches Seminar Univ. Jena and Inst f. Marxismus-Leninismus Jena, $20
Attractive cover design by W. Buhe, Leipzig.

20930. Petri, Franz, 1903-1993. Zum Stand der Diskussion über die fränkische Landnahme, und die Entstehung der germanisch-romanischen Sprachgrenze. Darmstadt, Wissenschaftliche Buchegesellschaft [1954], Sonderausgabe, 116pp. 19 cm, good small black 1/4 cloth, some light foxing, some light pencil erasures, previous owner's stamp, $10
"Libelli", Bd. 12.

13748. Roewer, Helmut. Linksniederrheinische städtische Siedlungen. Eine funktionell-genetische Untersuchung zur vergleichenden Stadtgeographie. Remagen, Verlag der Bundesanstalt für Landeskunde, 1954, ix, 198pp. illus., maps. 24 cm, PAPERBACK, very good sewn paper wraps, worn around edges with maps and charts in back, $45
Forschungen zur deutschen Landeskunde, Bd. 83.

12335. Sauer, Carl O.. Selected Essays 1963-1975. Edited by Bob Callahan. Berkeley: Turtle Island Foundation, 1981, 391pp., very good dust-jacket, good dark red cloth, cover a bit worn, $40
Includes Sauer bibliography. Essays on agriculture and the American frontier, early habitats, use of fire, aboriginal populations of Mexico, historical geography as a discipline, the formative years of Ratzel in the United STates, the agency of man on earth. ISBN 0913666459

12265. Van Cleef, Eugene, 1887-. Trade centers and trade routes. New York, London, D. Appleton-Century company, incorporated [1937], xvi, 307pp. illus. (incl. maps, plans) plates, diagrs. 23 cm, very good blue cloth, spine slightly faded, $30
The Century earth science series. "A selected bibliography of works in English": pp. 271-276. Includes maps. Discussions of the unifying effects of radio and the motion picture, press and postal service, telegraph and cable, motor vehicle, as well as geography of ocean ports, trade routes by land and sea. First published in 1931.

4789. van Valkenburg, Samuel / Ellsworth Huntington. Europe. London: John Wiley and Sons, 1935, later prtg., 651pp., good green cloth, spine rubbed, minor underlining, good reading copy, previous owner's stamp and bookplate, $12
An introduction to the economic and political geography of Europe by an American and a European geographer.