A taxonomic revision of the rodent genus Phyllotis /
by O.P. Pearson.
- Berkeley ; Los Angeles : University of California Press, 1958.
- 391-495 p. : illus. ; 26 cm.
- University of California publications in zoology, v. 56, no. 4 .
"A contribution from the Museum of Vertebrate Zoology of the University of California."