(Table 22) Trace element contents in phosphorites from the Ogasawara Plateau

Analyses have been carried out by M.V. Voytyshina (Primorgeologiya).

分析工作由隶属于Primorgeologiya（滨海边疆区地质局）的M.V. 沃伊季希娜（M.V. Voytyshina）完成。