Quality of ground water in agricultural areas of the San Luis Valley, south-central Colorado /

Bibliography: p. 25-26.

The correlation and conservation of forces : a series of expositions ... /

Includes index.

Wetland Reserve Program : restoring America's wetlands.

"February 2000"--P. [3] of cover.

The Cotton-and-tobacco South.

Chiefly illustrations.

A short method with modern doubt. A centenary contribution. In three parts: 1. Jesus His own proof. II. The laws of nature. III. Correspondence with Spinoza.

Mode of access: Internet.

Documentary material on nature protection and wild life preservation in Latin America ... Prepared for the use of the Committee of experts on nature protection and wild life preservation, Pan American union, Washington, D.C., May 13-16, 1940 ...

Issued also in Spanish.

Fairy legends and traditions of the South of Ireland.

Vols. 2 and 3 have dedication signed: T. Crofton Croker.

Impressions of South Africa /

pt. I. Nature -- pt. II. History -- pt. III. A journey through South Africa -- pt. IV. Some South African questions.

Convention and documentary material on nature protection and wild life preservation in the western hemisphere.

Mode of access: Internet.