Stories by Amir N. Hanna

The author is a senior program officer for TRB’s Cooperative Research Programs at the National Academies of Sciences, Engineering, and Medicine in Washington, DC.

A large red tractor with large, dual rear wheels is shown pulling a green manure tanker along a paved road.
Implements of husbandry (IoH), have grown bigger and heavier, but state road practices have not kept pace. The authors present ...

Lev Khazanovich and Amir N. Hanna

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