51. The Evolution of population theory : a documentary sourcebook Publication/Creation: Westport, Conn. : Greenwood Press, 1977 Resource Type: Book Access & Availability: Loading
52. Exploring alternative race-ethnic comparison groups in current population surveys Author/Creator: Del Pinal, Jorge H. Publication/Creation: Washington, D.C. : U.S. Dept. of Commerce, Bureau of the Census : For sale by the Supt. of Docs., U.S. G.P.O., 1992 Resource Type: Book Access & Availability: Loading
53. Exploring new ethics for survival : the voyage of the spaceship Beagle Author/Creator: Hardin, Garrett, 1915-2003 Publication/Creation: New York : Viking Press, [1972] Resource Type: Book Access & Availability: Loading