Advisory Opinion on Constitutionality of 1976 Pa 240 , 400 Mich. 311 ( 1977 )
Howell v. Vito's Trucking and Excavating Co. , 386 Mich. 37 ( 1971 )
Greenfield Construction Co. v. Department of State Highways , 402 Mich. 172 ( 1978 )