@COMMENT { BibTex package created from National Library of Australia Catalogue https://catalogue.nla.gov.au } @Book{ nla.cat-vn1961213, author = { Pullan, J. M. }, title = { The history of the abacus / [by] J.M. Pullan }, publisher = { F. A. Praeger New York }, pages = { xiii, 127 p. }, year = { 1969 }, type = { Book }, language = { English }, subjects = { Abacus. }, life-dates = { 1969 - 1968 }, catalogue-url = { https://nla.gov.au/nla.cat-vn1961213 }, }