Читать книгу Checking the Waste: A Study in Conservation - Mary Huston Gregory - Страница 9

Table of Contents

Lands. Report National Conservation Commission.

Soil Wastage. Chamberlain. Report White House Conference of Governors.

Conservation of Soils. Van Hise. (Same.)

Commercial Fertilizers. Dept. of Agriculture Bulletin, 44.[A]

The Liming of Soils. Dept. of Agriculture Bulletin, 57.

Renovation of Worn-out Soils. Dept. of Agriculture Bulletin, 245.

Soil Fertility. Dept. of Agriculture Bulletin, 257.

Management of Soils to Conserve Moisture. Dept. of Agriculture Bulletin, 266.

Fertilizers for Cotton Soils. Bureau of Soils Bulletin, 62.

Work of the Bureau of Soils. Bureau of Soils Bulletin.

Exhaustion and Abandonment of Soils. Bureau of Soils Bulletin. Whitney, 5c.

Phosphorus. Illinois Agricultural Experiment Station Bulletin.

The Present Status of the Nitrogen Problem. Yearbook Dept. of Agriculture Reprint, 411.

The Search for Leguminous Forage Crops. Yearbook Dept. of Agriculture Reprint, 478.

Leguminous Crops. Yearbook Dept. of Agriculture Bulletin, 278.

Progress in Legume Inoculation. Yearbook Dept. of Agriculture Bulletin, 315.

A Grain for Semi-arid Lands. Yearbook Dept. of Agriculture Bulletin, 139.

The Sugar-Beet. Yearbook Dept. of Agriculture Bulletin, 52.

Dry-Land Problems in the Great Plains Area. Yearbook Dept. of Agriculture Reprint, 461.

Reports of Dry Farming Congress.

The Natural Wealth of the Land. J. J. Hill, Report Governor's Conference.

National Wealth and the Farm. J. J. Hill.