海量图书期刊资源,随时随地畅享阅读乐趣
Shear degradation of polyisobuteneKent B. Abbås; Roger S. Porter · 1976
Advising the PresidentRoger B. Porter · PS · 1986
The President, Congress, and Trade PolicyPorter, Roger B. · Congress & the Presidency · 1988
Advising the PresidentPorter, Roger B. · PS: Political Science & Politics · 1986
A Conversation with Roger B. PorterRoger B. Porter · Public Productivity Review · 1982
John Stuart Mill and FederalismRoger B. Porter · Publius · 1977
Questions and DiscussionsWilson, E. B.; Johnson, Roger A.; Dunkel, Otto; Porter, M. B. · The American Mathematical Monthly · 1917
The U.S.–U.S.S.R. grain agreement || ForewordPorter, Roger B. · 1984