Title: Sampling opinions; an analysis of survey procedure
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF000030164&ix=nu&I=0&V=D" rel="nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF000030164&ix=nu&I=0&V=D</a>
Subjects: Public opinion polls, Sampling (Statistics.