共 13 条
[1]
BREAZEALE JF, 1923, J AGR RES, V24, P41
[5]
HOAGLAND DR, 1936, ESSAYS GEOBOTANY HON
[6]
ISAACS TL, 1942, IN PRESS PLANT PHYSL
[9]
OVERSTREET R, 1939, P SOIL SCI SOC AM, V4, P125