A. H. Hoffman

No biography available.

Works (6)

Cover of Air cleaners for motor vehicles

Air cleaners for motor vehicles

Cover of The tendency of tractors to rise in front

The tendency of tractors to rise in front

Cover of Laboratory tests of orchard heaters

Laboratory tests of orchard heaters

Cover of Dust and the tractor engine

Dust and the tractor engine

Cover of Machines for coating seed wheat with copper carbonate dust

Machines for coating seed wheat with copper carbonate dust

Cover of Substitutes for wooden breakpins

Substitutes for wooden breakpins