Sound and music: an elementary treatise on the physical constitution of musical sounds and harmony, including the chief acoustical discoveries of Professor Helmholtz.

Mode of access: Internet.

Principles and problems of naval leadership.

"Navpers 15924A."

Farm knowledge; a complete manual of successful farming written by recognized authorities in all parts of the country; based on sound principles and the actual experience of real farmers - "The farmer's own cyclopedia",

The volumes are issued in two parts each, with individual t.-p.

Principles and practice of telephony.

Mode of access: Internet.

Labor arbitration, principles and procedures,

Mode of access: Internet.

Pictorial photography; its principles and practice,

Mode of access: Internet.

Principles and methods of sheet-metal fabricating.

Includes bibliographies.

Principles and methods of sociology,

Bibliography at end of each chapter.

The church and the age : essays on the principles and present position of the Anglican Church : second series /

Includes bibliographical references.

The Democratic text-book : containing the lives of Pierce and King, with illustrations of the Whig and Democratic principles and candidates.

Cover title.

Pearls of paradise : part one : a collection of the song-gems of the ages, containing hymns and music suited for every service of the Christian Church /

Mode of access: Internet.

The natural principles and analogy of the harmony of form.

Mode of access: Internet.

Principles and practices of network radio broadcasting;

Mode of access: Internet.