LIGNUM 1931-1981.
Publisher: LIGNUM
Published: 1981
Place of publication: Le Mont-sur-Lausanne
Language: fre
Number of pages: 31
Subjects: LIGNUM (Association : Switzerland) -- History.
Other titles: L.I.G.N.U.M. 1931-1981.
Notes: "Une étude du professeur Hermann Tromp."