Descriptive sociology: or, Groups of sociological facts

No. 1. English / by James Collier. 1873 (Div. IIIPt. 1-C) No. 2. Ancient Mexicans, Central Americans, Chibchas, and Ancient Peruvians / by R. Scheppig. March 1874 (Div. IIPt. 1-B) No. 3. Types of Lowest Races, Negritto Races and Malayo-Polynesian Races / by D. Duncan. May 1874 (Div. IPt. 1-A) No. 4. African Races / by D. Duncan. March 1875 (Div. IPt. 2-A) No. 5. Asiatic Races / by D. Duncan. Oct. 1876 (Div. IPt. 3-A) No. 6. North and South American Races / by D. Duncan. June 1878 (Div. IPt. 4-A)