@COMMENT { BibTex package created from National Library of Australia Catalogue https://catalogue.nla.gov.au } @Book{ nla.cat-vn328584, author = { Pullan, J. M. }, title = { The history of the abacus [by] J. M. Pullan }, publisher = { Hutchinson London }, pages = { xiii, 127 p. }, year = { 1968 }, type = { Book }, language = { English }, subjects = { Abacus. }, life-dates = { 1968 - }, catalogue-url = { https://nla.gov.au/nla.cat-vn328584 }, }