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平台:
Cambridge University Press Journals (歷年訂刊)
(Available from 2020 until 2022.)
JSTOR Arts and Sciences VII
(Available from 1969/04/01 volume: 1 issue: 1. Most recent 4 year(s) not available.)
Project Euclid (過刊)
(Available from 2016/07/01. Most recent 1 year(s) not available.)
ProQuest SciTech Premium Collection
(Available from 2011 until 2013.)