Franconian trilobites of New York State
By: by Rolf Ludvigsen and Stephen R. Westrop
Contributors: Westrop, S. R.
Series: New York State Museum memoir -- 23; Memoir (New York State Museum and Science Service) -- 23
Publisher: University of the State of New York; State Education Department
Published: 1983
Place of publication: Albany, N.Y
Language: eng
Number of pages: 82
Subjects: Trilobites; Stratigraphic Geology; Geology
Notes: Bibliography: p. 42-45.

"Sources of trilobite collections": p. 5-6.