Revision history for entry Whitehead, A. N.; Russell, B.: Principia Mathematica [WHIPM-7]

NB: for privacy reasons, few details are provided in public revision histories.
TimeTypeNotes
2020-02-07T15:01:52update
2018-03-07T11:01:49updateSystem / admin update -
2017-02-20T10:54:07addSystem / admin update -