Marbut's Pedocal/Pedalfer boundary lies near the 98 meridian and 30 inches annual precipitation. (after Marbut, 1935)
Pedocal
HYDROGEN-ION CONCENTRATION OF THE IMPORTANT SOILS OF THE UNITED STATES IN RELATION TO OTHER PROFILE CHARACTERISTICS: I. PEDOCAL SOILS.
イングランド南部地方の Pedocal 的傾向を有する土壌に就て
Phosphate relation of soil and plant, IX. Phosphate solubility of pedocal and calalfer soils
Pedologiacal information analysis of the Araguaína and Palmeirante for agricultural zoning State of Tocantins
An introduction on the map of potential of phosphate nutrition in the soils of China
INTENSIVE CULTIVATION OF MAJOR SOILS IN CHINA
STUDIES ON HUMIC SUBSTANCES OF SOILS IN LOESS AREA OF NORTHWEST CHINA
Geologic map of the Duncan and Canador Peak quadrangles, Arizona and New Mexico
Soil fertility management in the Indian arid zone.
