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The Helderberg Group and the position of the Silurian-Devonian boundary in North America

Bulletin 1180-B

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Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
The Helderberg Group and the position of the Silurian-Devonian boundary in North America
Series title:
Bulletin
Series number:
1180
Chapter:
B
Edition:
-
Year Published:
1964
Language:
ENGLISH
Publisher:
U.S. G.P.O.,
Description:
iii, 19 p. :map ;24 cm.