concept

Outlines of the evolution of weights and measures and the metric system / by William Hallock...and Herbert T. Wade.

Voice production and analysis / By William Hallock and Floyd S. Muckey.

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William Hallock

Catalogue

Outlines of the evolution of weights and measures and the metric system / by William Hallock...and Herbert T. Wade.

Voice production and analysis / By William Hallock and Floyd S. Muckey.