There are 1 book by Humphrey, John R. (John Regester), 1879- on BookOrb. A strong starting point is Marketing Hemp (1919). The bibliography below is in publication order, with series grouped in reading order.
Standalone books
Frequently asked questions
How many books has Humphrey, John R. (John Regester), 1879- written?
BookOrb lists 1 book by Humphrey, John R. (John Regester), 1879-.
Where should I start with Humphrey, John R. (John Regester), 1879-?
A good starting point is Marketing Hemp (1919).
What is the Humphrey, John R. (John Regester), 1879- books in order list?
In publication order: 1. Marketing Hemp (1919).