Four hundred years of mining history in Mexico, 1521 to 1937.

"April 21, 1947."

The cyanide process of gold extraction: a text-book for the use of mining students, metallurgists, and cyanide operators.

Mode of access: Internet.

An elementary text-book of coal mining... /

Mode of access: Internet.

A text-book of coal-mining. For the use of colliery managers and others.

Short bibliography at end of each chapter.

Las Casas as a bishop : a new interpretation based on his holograph petition in the Hans P. Kraus Collection of Hispanic American manuscripts = Las Casas, obispo : una nueva interpretación basada en su petición autógrafa conservada en la Colección Hans P. Kraus de manuscritos hispanoamericanos /

Includes indexes.

Mining and manufacturing industries in Bolivia ...

"One of a series of reports on mining and manufacturing industries in the American republics."

Tongass National Forest (N.F.), Quartz Hill road access, bulk sampling permit D,Dapp,Dsup,F,Fapp; Draft mining development concepts B1; Mining development concepts : environmental impact statement.

Mode of access: Internet.

Forense: un auto de la Corte Suprema de la República, en la cuestión Banco Nacional de Bolivia y don Inocencio Balanza, ante el fallo de la opinión pública.

"Apéndices [documentales]": p. 1-L at end.

Auto safety: effectiveness of Ford Transmission settlement still at issue.

Mode of access: Internet.

Gobierno republicano representativo federal sin municipios autónomos.

Mode of access: Internet.