共 8 条
[7]
A correlated light and electron m icroscope studies of sym biotic growth and differentiation in Pisumsativum rootnodules. New com b W. Canadian Journal of Botany . 1976
[8]
Electron m icroscopy ofinfection thread and bacteria in young rootnodules ofMedicago sativa. Jordan D C, GrinyerI, Coulter W J. Journal of Bacteriology . 1963