http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Two- to ten-day rainfall for return periods of 2 to 100 years in Puerto Rico and Virgin Islands
prepared by John F. Miller for Engineering Division, Soil Conservation Service, U.S. Dept. of Agriculture.
Includes bibliographical references (page 11).
Technical paper (United States. Weather Bureau) ; no. 53