@inbook{Needham+1980+17+40,
url = {https://doi.org/10.3138/9781487577865-004},
title = {1. Unilateral Figures},
booktitle = {Reconnaissances},
author = {Rodney Needham},
publisher = {University of Toronto Press},
address = {Toronto},
pages = {17--40},
doi = {doi:10.3138/9781487577865-004},
isbn = {9781487577865},
year = {1980},
lastchecked = {2026-05-08}
}