Romania. 1961. Guide des Excursions [from the] Association Gèologique Carpato-Balkanique -5^me Congrès in Bucharest. Set of 4 paperback guidebooks. All text in French, maps in French and Romanian (Cyrillic alphabet). Vol A -Apercu Générale sur la Géologie de la Région Baia Mare, 59pp + one fold out colour printed map 1:100,000 scale (59 x 41cm); vol B - Apercu Générale sur le Crétacé de la Courbure des Carpates [Orientales], 107pp.  + with one foldout map 1:300,000 (62 x 36cm)and two foldout sections colour printed and two foldout maps and two foldout sections in b&w; vol C - Apercu Générale sur la Structure Géologique de la Région Carpates Meridionales entre le Danube et l’Olt, 131pp. + 3 fold out colour printed maps 1:100,000 (37 x 62cm and two smaller at 1:500,000), and 3 foldout maps and 3 foldout sections in b&w; vol D - Apercu Générale sur la Géologie de la Région de la Dobrogea, 91pp. + one foldout colour printed map 1:250,000 {62 x 44.5cm). Covers worn with sun tanned spines – in good condition, text and maps in very good condition.