Ecologie du manchot empereur.
Paris: Hermann, 1961. Octavo, photographs, softcover. More
Paris: Hermann, 1961. Octavo, photographs, softcover. More
The Hague: Dr W Junk, 1965. Octavo, photographs, bookplate, softcover. More
Brussels: Institut Royal des Sciences Naturelles de Belgique, 1982. Octavo, maps, photographs, signature, binder's cloth. Extracted from Le Gerfaut, volume 72. More