Author: Fromaget, J.
Title: Etudes geologiques sur le Nord de l'Indochine Centrale.
Description: Hanoi, Bull. Service geologique de l'Indochine, 1927. 168p., 3 geol. folded profiles, 10 photographical plates, 10 coloured geological maps, incl. the important geological map in 2 sheets of northern Vietnam. Scale 1:400.000. Orig. wrs. - uncut = Rare monograph and a basic geological research of northern Vietnam. Also with ethnological observations and illustrations.

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