U. S. GEOLOGICAL SURVEY, 345 MIDDLEFIELD ROAD, MENLO PARK, CALIFORNIA
PUBLICATION APPROVED BY THE DIRECTOR, U. S. GEOLOGICAL SURVEY
DAVID GALLAGHER; ON LANTERN SLIDES. GSA Bulletin ; 76 (9): 1081. doi: https://doi.org/10.1130/0016-7606(1965)76[1081:OLS]2.0.CO;2
Download citation file:
Before photography, look at the original from as many feet away as it is inches wide, and you will see it as it will look to the audience as a slide on the screen.
Sign In or Create an Account
This PDF is available to Subscribers Only
For full access to this pdf, sign in to an existing account, or purchase an annual subscription.