The Reader's Digest. 1990. In-8. Relié. Bon état, Couv. convenable, Dos satisfaisant, Papier jauni. 510 pages. Texte en anglais. Signet conservé. Quelques rousseurs. Nombreuses illustrations en noir et blanc et en couleurs, in et hors texte. Titre, filets en doré au dos. Tampon en page de titre.. . . . Classification Dewey : 420-Langue anglaise. Anglo-saxon
Reader's Digest condensed books Classification Dewey : 420-Langue anglaise. Anglo-saxon
"HOFMANN, A.W. (AUGUST WILHELM von). - THE TRUE NATURE OF AMINES DEMONSTRATED.
Reference : 44307
(1851)
(London, Richard Taylor, 1851). 4to. No wrappers as extracted from ""Philosophical Transactions"" 1851 - Part I. Pp. 357-398.
First appearance of a landmark paper in organic chemistry in which Hofmann demonstrates the true nature of amines.""Wurtz had shown the existence of methyl and ethyl amines and had suggested that that they may be regarded as derivatives of ammonia. Hofmannproved this in adetailled study, in which he showed that all hydrogens of ammonia, and even of the ammonia radical, could be replaced by organic groups to give primary, secondary, and tertiary amines, and quaternary ammonium compounds. In the course of this work, he also cleared up the relation between ammonia and the ammonium radical which had long troubles chemists. The investigation was carried out in 1850, at a time when the type theory was foremost in theminds of organic chemists. It was therefore natural that Hofmann should formulate his nes compounds as representative of the ""ammonia type"". The formulas which he wrote, however scarcely differ from those used today. These clear examples helped Frankland in developing his theory of variable valence.""(Klickstein p. 364). Klickstein's selection is taken form the offered item pp. 392-397.
BARNHURST PAULETTE - TRUE PRUE (illustrations)
Reference : RO20277018
(1995)
ISBN : 2841960110
QUATRE FLEUVES / ZIGZAG PUBLISHING. 1995. In-8. Relié. Etat d'usage, Couv. convenable, Dos satisfaisant, Intérieur frais. 24 PAGES illustrées de dessins en couleur, dans et hors texte. . . . Classification Dewey : 843.0692-Livres d'enfants
Classification Dewey : 843.0692-Livres d'enfants
Urban, s.e., 1919 ; 153 x 229 mm, 28 pp., doubles-feuilles agrafées. En langue anglaise. University of Illinois: Agricultural Experiment Station. Bulletin No. 220. Bon état.
Boston, 1978 Oxbow 59 p., planches 59 à 109 hors texte, feuillets sous chemise. 26 x 33
Occasion
Washington, 1913. 4to. Orig. full cloth., gilt. VIII,399 pp., plates and 7 portraits in heliogravure. Clean and fine.
ESSEFFA. 1982. In-12. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur frais. Pochette ouvrante en couleurs. Photo : Richard Dormer - Londres. Arrangements : Brian Stanborough, Piano : Bösendorfer.. . . . Classification : 410-33 Tours
Disque n°ES 33002. Classification : 410-33 Tours
O. R. Reisland, Leipzig. 1908. In-8. Broché. Bon état, Couv. convenable, Dos satisfaisant, Intérieur acceptable. 60 pages. Etiquette de code sur la couverture. Quelques tampons de bibliothèque.. . . . Classification Dewey : 420-Langue anglaise. Anglo-saxon
7th edition. Classification Dewey : 420-Langue anglaise. Anglo-saxon
Boston, 1978, 330x250mm, XI- 54pages, editor's binding. Maps. Book in good condition.
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