Published by Stockhom
Seller: Aquila Antiquariaat, Lochem, GLD, Netherlands
8vo. Pp. 57, 1 plate, 106 figs., refs. Plain new wrappers, uncut.
Published by Stockholm
Seller: Aquila Antiquariaat, Lochem, GLD, Netherlands
8vo. Pp. 63, 20 microphotos on 2 plates, 173 figs., bibliogr. Orig. printed wrappers.
Publication Date: 1958
Seller: ConchBooks, Harxheim, Germany
3 pp., 4 figs, br. gr. 8.
Publication Date: 1952
Seller: ConchBooks, Harxheim, Germany
5 pp., 1 fig., br. gr. 8.
Publication Date: 1962
Seller: ConchBooks, Harxheim, Germany
13 pp., 3 figs, br. gr. 8.
Publication Date: 1949
Seller: ConchBooks, Harxheim, Germany
3 pp., 1 pl., br. 8.
Publication Date: 1952
Seller: ConchBooks, Harxheim, Germany
5 pp., 5 figs, 1 pl., br. gr. 8.
Treated taxa: Acroloxus lacustris, Patella vulgata, Mytilus edulis, Sphaerium corneum 6 pp., 1 fig., 3 pls, br. gr. 8.
Publication Date: 1945
Seller: ConchBooks, Harxheim, Germany
13 pp., 3 figs, br. 8.
Treated taxon: Camptoceras hirasei 7 pp., 11 figs, br. gr. 8.
Publication Date: 1957
Seller: ConchBooks, Harxheim, Germany
11 pp., 6 figs, br. gr. 8.
Publication Date: 1953
Seller: ConchBooks, Harxheim, Germany
14 pp., 29 figs, br. gr. 8.
Publication Date: 1959
Seller: ConchBooks, Harxheim, Germany
New taxa: Gyraulus fontinalis n. sp., Gyraulus crenophilus n. sp. 21 pp., 42 figs, br. gr. 8.
Published by Goteborg, 1962
Seller: PEMBERLEY NATURAL HISTORY BOOKS BA, ABA, Iver, United Kingdom
US$ 20.71
Quantity: 1 available
Add to basketCondition: Very Good. 68, 35 figs. . PB. Wrappers, minor shelf-wear. Vg. Meddelanden från Göteborgs musei zoologliska avdelning 133.
Published by Goteborg, 1961
Seller: PEMBERLEY NATURAL HISTORY BOOKS BA, ABA, Iver, United Kingdom
US$ 23.47
Quantity: 1 available
Add to basketCondition: Very Good. 50, 3 b/w plates, 123 figs. . PB. Wrappers. Vg. Meddelanden från Göteborgs musei zoologliska avdelning. 132.
Publication Date: 1948
Seller: ConchBooks, Harxheim, Germany
Treated taxa: Helicopsis striata, Xerocrassa geyeri, Chondrina clienta 5 pp., 3 figs, 8.
Publication Date: 1975
Seller: ConchBooks, Harxheim, Germany
8 pp., 35 figs, gr. 8.
Publication Date: 1957
Seller: ConchBooks, Harxheim, Germany
New taxon: Patelloplanorbis tigiensis n. sp. 6 pp. + 1 pl., 8 figs, gr. 8.
Publication Date: 1963
Seller: ConchBooks, Harxheim, Germany
3 pp., 4 figs, gr. 8.
7 pp., 16 figs, gr. 8.
Publication Date: 1954
Seller: ConchBooks, Harxheim, Germany
6 pp., 8.
Publication Date: 1952
Seller: ConchBooks, Harxheim, Germany
New taxa: Fluviopupa rapaensis n. sp., Fluviopupa obtusa n. sp. 8 pp., 4 figs, 8.
Publication Date: 1953
Seller: ConchBooks, Harxheim, Germany
5 pp., 2 figs, 8.
Publication Date: 1960
Seller: ConchBooks, Harxheim, Germany
9 pp., 4 pls, gr. 8.
Publication Date: 1959
Seller: ConchBooks, Harxheim, Germany
7 pp., 2 pls, 8.
Publication Date: 1958
Seller: ConchBooks, Harxheim, Germany
No uniform method, applicable to all situations, can be developed for the quantitative study of bilharziasis vector snail populations. The selection of survey technique and sampling device depends on the objectives of the study, the circumstances in which the work is carried out, the nature of the habitat and the resources available. The various techniques used in obtaining snail-population estimates are divided into two categoriesdirect methods and indirect methods. The former involve the collection of snails from a specified habitat or for a specified period of time, while the latter include techniques, such as snail marking and palm-leaf traps, in which the snails are not obtained through the efforts of a collector. Each method and device is described in detail, and its suitability under various conditions is discussed. 12 pp., gr. 8.
Gyraulus crista, Gyraulus riparius 5 pp., 4 figs, 8.
Publication Date: 1951
Seller: ConchBooks, Harxheim, Germany
7 pp., 4 figs, 1 pl., gr. 8.
Publication Date: 1974
Seller: ConchBooks, Harxheim, Germany
8 pp., 35 figs, gr. 8.
Publication Date: 1973
Seller: ConchBooks, Harxheim, Germany
8 pp., 48 figs, gr. 8.