CONTENT AND RATIO OF GROUPS AND FORMS OF IRON COMPOUNDS IN THE VOLCANIC SOILS OF COSTA-RICA Статья VEGA O.T. Soviet Soil Science. Том 12. 1980. С. 545-553
CONTENT AND RATIO OF GROUPS AND FORMS OF IRON COMPOUNDS IN THE VOLCANIC SOILS OF COSTA RICA. Статья Vega O.T. Soviet Soil Science. Том 12. 1980. С. 545-553