Parker, Hubert Henry, 1892- The hop industry, by Hubert H. Parker. - London, P. S. King & son, ltd., 1934. - ix, [1], 327 p. front., illus., plates, maps, diagrs. (l fold.) 23 cm. Bibliography : p. 321-324. LCCN: l 34000067 Subjects--Topical Terms: Hops. LC Class. No.: HD9019.H7 / P3