PT - JOURNAL ARTICLE AU - Harold Wellman Fairbanks TI - The validity of the so-called Wallala beds as a division of the California Cretaceous AID - 10.2475/ajs.s3-45.270.473 DP - 1893 Jun 01 TA - American Journal of Science PG - 473--478 VI - s3-45 IP - 270 4099 - http://www.ajsonline.org/content/s3-45/270/473.short 4100 - http://www.ajsonline.org/content/s3-45/270/473.full SO - Am J Sci1893 Jun 01; s3-45