H. R. Verry

发表

Document copying and reproduction processes

H. R. Verry, 1958 .

The Duplication of Office Material

H. R. Verry, 1954 .

The Duplication of Office Material: Duplicating Processes

H. R. Verry, 1954 .

Some methods of printing and reproduction

H. R. Verry, 1966 .

PHOTO‐COPYING AND DUPLICATING PROCESSES

H. R. Verry, 1953 .