Image from the Biodiversity Heritage Library.
Contributed by Museum of Vertebrate Zoology, University of California, Berkeley.
| www.biodiversitylibrary.org
Transcription
Marshall, 1947 Bay
Sample Plot
San Pablo marsh
Contra Costa Co., Calif.
April 13-19
1mm = 2 1/2 yds
per half culture of April 15-18
upper half= culture of Apr. 15-18
'4