Text ( visual ) : unmediated A theory of political coalitions in simple and policymaking situations / by Paul T. Hill. -- Beverly Hills : Sage Publications , c1973. -- 46 p. ; 22 cm. -- (Sage professional papers in American politics ; v. 1, ser. no. 04-008). -- Bibliography: p. 45-46. -- ISBN 0803903065 ; (BA49190436) ; https://ci.nii.ac.jp/ncid/BA49190436 Author Heading(s): Hill, Paul Thomas. -- Classification(s): LCC : JC330 ; DC : 301.15/54/01. -- Subject Heading(s): LCSH : Coalition (Social sciences)