South Central Bell Telephone Co. v. Louisiana Public Service Commission , 256 La. 497 ( 1970 )
Karno v. Louisiana Tax Commission , 233 So. 2d 592 ( 1970 )
South Cent. Bell Tel. Co. v. LOUISIANA PUB. SERV. COM'N , 272 So. 2d 667 ( 1973 )