TY  - RPRT
TI  - Oblique map showing maximum extent of 20,000-year-old (Tioga) glaciers, Yosemite National Park, central Sierra Nevada, California
AU  - T. R. Alpha
AU  - Clyde Wahrhaftig
AU  - N.K. Huber
PY  - 1987
DO  - 10.3133/i1885
UR  - https://pubs.usgs.gov/publication/i1885
ID  - i1885
ER  -