EFFECT OF PHOSPHATE FERTILIZERS ON ZINC NUTRITION OF FIELD BEANS
A NUTRIENT MOBILITY CONCEPT OF SOIL-PLANT RELATIONSHIPS
MYCORRHIZAL FUNGI : THEIR DISTRIBUTION AND EFFECT ON TREE GROWTH
ABSENCE OF WATER EXUDATION FROM ROOTS OF PLANTS GROWN IN AN ATMOSPHERE OF HIGH HUMIDITY
EFFECT OF AMMONIA AND ITS OXIDATION PRODUCTS ON RATE OF NITRIFICATION AND PLANT GROWTH
NUTRIENT STATUS OF BRUSHLAND SOILS IN SOUTHERN CALIFORNIA
CATION EXCHANGE IN MICACEOUS MINERALS : II. REPLACEABILITY OF AMMONIUM AND POTASSIUM FROM VERMICULITE, BIOTITE, AND MONTMORILLONITE
Abnormal and Pathological Plant Growth
The American Grass Book
The Cultivation of Animal and Plant Cells
Farming with Nature
General Survey of the Soils of North Island, New Zealand
History of American Industrial Science
Instrumental Analysis
The Lime and Phosphate Potentials of Soils; the Solubility and Availability of Phosphates
The Mechanics of Engineering Soils. Second Edition
The Mechanism of Enzyme Action
Potentials in Moisture Migration
Principles of Farm Management
Proceedings of the Bihar Academy of Agricultural Sciences
Prospects for Agricultural Development in Latin America
Silage Fermentation
Soil
Soil Factors Affecting the Permanence of Pasture Growth
Standard Mathematical Tables
Vegetable Fats and Oils
The Western End of Lake Erie and Its Ecology
The World's Food
ALDERFER REPLACES BEAR AS SOILS CHAIRMAN
CLAY-MINERALS GROUP TO CONFER