Practical social science, a laboratory textbook
In: http://hdl.handle.net/2027/mdp.39015021278331
"The primary object has been to mobilize the concrete social data of the community for analysis and determination. The most essential materials of the Census bureau of the various government departments, and of certain great national organizations and research bureaus have been brought together as the basis for the work of the students." ; Mode of access: Internet.