Bruxelles, Académie royale (impr.par Hayez) 1903 668pp. avec 128 figures, (Mémoire couronné par la classe des sciences dans les séances du 15 déc.1888 et du déc.1902), publié dans "Mémoires couronnés et autres mémoires publiés par l'Académie Royale des Sciences, des Lettres et des Beaux-Arts de Belgique" coll.in-8 Tome LXIV, non coupé, B57604
Reference : B57604
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Bruxelles, Académie royale (impr. par Hayez) 1903 668pp., illustré de 128 figures, publié dans la série "Mémoires couronnés et autres mémoires publiés par l'Académie royale des sciences, des lettres et des beaux-arts de Belgique" coll.in-8 Tome LXIV, jolie reliure d'époque solide (plats marbrés, dos en cuir avec titre doré), 22cm., texte frais, bon état, poids: 1kg., B116214
.: 2. Bruxelles, Hayez, Imprimeur de l'Académie, 1903, in-8°, 668 pp, sewn, original printed wrapper (back wrapper is missing, last leaf with some damage but no loss of text.). Published as a ''Mémoire Couronné de l'Académie Royale des Sciences...de Belgique''. Translation in French of a scientific treatise in German by Prof. Curt Weigelt on water treatment and improvement of the water quality in rivers. The study contains a large numbers of test on the influence of water polluting chemicals on fresh water fishes , mainly trout. Very early study on ecology, environmental protection.
Hayez 1903 in8. 1903. Broché.
4e plat manquant dos fendu livre séparé en deux premier plat terni tranche fanée intérieur propre pages non coupées