Title: Social systems
Description: <a href="http://uf.catalog.fcla.edu/uf.jsp?st=UF000745016&ix=nu&I=0&V=D" rel="nofollow">http://uf.catalog.fcla.edu/uf.jsp?st=UF000745016&ix=nu&I=0&V=D</a>
Subjects: Social systems, Social change.