@inbook{Armstrong1972,
author = {Armstrong, W.A.},
title= {The use of information about occupation},
year = {1972},
doi = {10.1017/CBO9780511896118.007},
editor = {Wrigley, E.A.},
booktitle = {Nineteenth-century society: Essays in the use of quantitative methods for the study of social data},
address = {Cambridge},
publisher = {Cambridge University Press},
}