81: Kongl. vetenskaps academien, 1795. Hardcover. Part 2 only. Text in Swedish. 474 pp. + 2 folded engraved plates. Damp stain to lower part to pages. Foxing to pages. Worn cover and spine edges. Moderate rubbing to covers.

7: Raud Publishing, Helsinki, 2000. 1st Edition. Hardcover. 410 pp. This book contains the basic facts about Mars known to Mankind at this moment. The authors are well-known Mars explorers from U.S.A., Japan and Europe.