Poyzer v. Amenia Seed and Grain Co. , 409 N.W.2d 107 ( 1987 )
Robar v. Ellingson , 301 N.W.2d 653 ( 1981 )
Poyzer v. Amenia Seed and Grain Co. , 381 N.W.2d 192 ( 1986 )