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- Hall, Kermit L., ed. The Oxford Companion to the Supreme Court of theUnited States. New York: Oxford University Press, 1992.
- Levy, Leonard W., ed. Encyclopedia of the American Constitution. New York: Macmillan, 1986.
- Witt, Elder. Congressional Quarterly's Guide to the Supreme Court,2nd ed. Washington, DC: Congressional Quarterly Inc., 1990.
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9 months ago
See also, CONSTITUTIONAL LAW - Contract Clause -Minnesota's Pension Plan Act Violates Contract Clause - Allied Structural Steel Co. v. Spannaus (U.S. 1978) for critical review of case at 25 Villanova Law Review 160 (1979)