@book{ Solr-022434720, title = {Undercover: police surveillance in America}, series = {A Twentieth Century Fund Book}, author = {Marx, Gary T.}, address = {Berkeley u.a.}, publisher = {Univ. of California Press}, year = {1988}, url = {http://www.loc.gov/catdir/bios/ucal051/88001254.html} url = {http://www.loc.gov/catdir/description/ucal041/88001254.html} }