TY - BOOK AU - Summers, Robert S. AU - Hillman, Robert A. TI - Contract and related obligation : theory , doctrine , and practice T2 - American casebook series AV - KF801.A7S95 1992 PB - West Publishing KW - Contracts - United States - Cases KW - Obligations ( Law ) - United States - Cases KW - KF N1 - Includes index ER -