http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
produced by the Cartographic Division, National Geographic Society ; William T. Peele, chief cartographer ; David W. Cook, associate chief cartographer ; map design by John F. Dorr.
"Supplement to National Geographic, December 1976, page 722A, volume 150, number 6-Whales of the World."
Illus. and text of "Whales of the World" on verso.
or 1,475 kilometers (917 miles) to the in. at the equator.