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RELATIONSHIP BETWEEN SODIUM ION ACTIVITY IN SOIL AND ITS MOISTURE CONTENT.KRUPSKIJ NK; ALEKSANDROVA AM; LAPKINA JU I et al.1968; SOVIET SOIL SCI.; USA; 1968(3), NUM. 0003, P. 368 A 377Miscellaneous
DEPENDENCE OF SODIUM ION ACTIVITY IN THE SOIL ON ITS MOISTENING DEGREE.KRUPSKIJ NK; ALEKSANDROVA AM; LAPKINA JU I et al.1968; POCHVOVEDENIE; SUN; 1968(3), NUM. 0003, P. 70 A 80Miscellaneous