Vital statistics on American politics / Harold W. Stanley, Richard G. Niemi Economics /Richard G. Lipsey ... [et al.] Understanding Singapore politics / Bilveer Singh Sociology in modules / Richard T. Schaefer Chronology of International organizations / Richard Green How children learn mathematics : teaching implications of piagets research / Richard W. CopelandEmployment, incomes and migration in Papua New Guinea Towns / Ross Garnaut, Michael Wright, Richard CurtainFundamentals of behavioral statistics / Richard P. Runyon ... [et al.]Indonesia-Australia relations : diverse cultures, converging interest / editors, Hadi Soesastro, Tim McDonaldGlobal issues : politics, economics, and culture / Richard J. Payne