Preliminary report on the operations of the coal testing plant of the U. S. Geol. survey at the La. purchase exp.

Mode of access: Internet.

A short review of mining operations.

Mode of access: Internet.

Field operations of the Bureau of Soils /

Report for each year issued in two volumes: text, and portfolio.

The Iowa transit.

Vol. 26- no general t.-p. and index.

Summary of operations; annual report of the State Oil and Gas Supervisor.

First-third reports, 1915/16-1917/18, issued as California State Mining Bureau Bulletin no. 73, 82, 84.

Standard practical plumbing; an exhaustive treatise on all branches of plumbing construction, including drainage and venting, ventilation, hot and cold water supply and circulation; showing the latest and best plumbing practice, special attention being given to the skilled work of the plumber, and to the theory underlying plumbing devices and operations,

Mode of access: Internet.

Scientific guide to pest control operations

Mode of access: Internet.

Fundamentals of chemical engineering operations.

Includes bibliographies.