Oberst v. Mays

"Any landowner aggrieved at the amount of the assessment against his land may bring an action in the district court of the county in which the land is situated to test the validity of the assessment or to enjoin its collection, but such action must be brought within thirty days after the assessment is made and the copy of the resolution of the board is mailed as hereinabove provided, and cannot be brought thereafter. * * *"