RELATION OF TEMPERATURE TO THE AMOUNT OF NITROGEN IN SOILS
THE RELATION BETWEEN CONCENTRATIONS OF POTASSIUM IN CULTURE SOLUTIONS AND OPTIMUM PLANT GROWTH
A CRITICAL STUDY OF THE INFLUENCE OF SOIL TYPE ON THE CALCIUM AND MAGNESIUM CONTENT AND OTHER PHYSIOLOGICAL CHARACTERS OF THE ALFALFA PLANT
A NEW, SIMPLE, AND RAPID METHOD FOR DETERMINING THE MOISTURE EQUIVALENT OF SOILS, AND THE ROLE OF SOIL COLLOIDS ON THIS MOISTURE EQUIVALENT
REPAIR OF SOIL FILTER TUBES
THE USE OF DEXTRINE IN THE ISOLATION AND IDENTIFICATION OF AZOTOBACTER CHROOCOCCUM
Laboratory Manual of General Microbiology with Special Reference to the Microorganisms of the Soil