Polycyclic swallow holes in the Manifold Valley, Staffordshire, England.
Contributors: International Speleological Congress, (1st : 1953 : Paris)
Publisher: [s.n.]
Published: 1955
Place of publication: Millau
Language: eng
Notes: Covertitle.

At head of title: Premier Congre  s International de Spe le ologie, Paris, 1953.

Extrait des publications du Congre  s, tome 2, section 1.