TERTIUM ORGANUM. The Third Canon of Thought. A Key to the Enigmas of the World.. Revised translation by E. Kadloubovsky and the author by OUSPENSKY, P.D - 1981

Alfred A. Knopf, 1923. Hardcover. Fair Condition/No Dust Jacket. 336 pages. Moderate wear to the covers, the pages are yellowed, some staining; name inside, cracked binding; a good solid book otherwise. No jacket. Quantity Available: 1. Category: Paranormal; Inventory No: 210477. .

Vintage Books (Random House), 1970. paperback. Good. 0x0x0.

New York: Vintage Books (Random House), 1970. 1st Vintage Books edition. Paperback. Very Good. 306p. A softcover book in very good condition. Edges rubbed, small dent in spine, and very small closed tear on edge of front cover. Pages mildly age-toned, as is typical of vintage paperbacks. Otherwise clean and tight.

New York: Vintage Books. Good paper copy 306 pp of text. *Pages are discolored and there are pen marks and underlining of text . Good. Paper. 1970.

NY: Alfred A. Knopf, 1969. Third edition. Hardcover. Minor dent to bottom edge of covers, else very good plus condition with text clean & binding tight in a good but sun faded and torn dust jacket which is now in a clear protective mylar sleeve. Fold-out chart, 306pp. 1969 tenth printing of the third edition.

Alfred A. Knopf. Used - Good. Good condition. No Dust Jacket 2nd American edition. (Fourth Dimension, Consciousness, Philosophy) A copy that has been read but remains intact. May contain markings such as bookplates, stamps, limited notes and highlighting, or a few light stains.

New York, Alfred A. Knopf, 1947, 8vo tutta tela editoriale nera con titoli in rosso al piatto anteriore e al dorso, pp. XV-306 con figure nel testo e un prospetto ripiegato in fine. Alcuni segnetti e chiose a margine del testo, a matita leggera, facilmente e completamente cancellabili. Molto buono / Ottimo.

London: Routledge & Kegan Paul, 1981. FINECLOTH COPY in a fine dust jacket. A revised translation by E. Kadloubovsky of "Philokalia" fame, in concert with Mr. Ouspensky. 298 pages, indexed. Octavo.

London: Routledge and Kegan Paul, 1981. Hardcover. Very Good/Dust Jacket Included. London, Routledge and Kegan Paul, 1981 (revised edition)/ 1923. Octavo, xvi, 298 pages. Papered boards very slightly rubbed; pencilled ownership signature; an excellent copy with the dustwrapper very slightly rubbed and marked. Revised translation from the Russian by E. Kadloubovsky and the author; the book was first translated by Nicholas Bessaraboff and Claude Bragdon.

Alfred A Knopf, 1938. Book. Very Good. Hardcover. 2nd Edition. Cover has a few faint smudges and light rubbing.