@inbook{+1921+v+vi,
url = {https://doi.org/10.4159/harvard.9780674288065.prf},
title = {PREFATORY NOTE},
booktitle = {Learning and Living},
booktitle = {Academic Essays},
publisher = {Harvard University Press},
address = {Cambridge, MA and London, England},
pages = {v--vi},
doi = {doi:10.4159/harvard.9780674288065.prf},
isbn = {9780674288065},
year = {1921},
lastchecked = {2026-04-29}
}