TY - BOOK AU - Borovik,Alexandre AU - Gardiner,Tony TI - The essence of mathematics: through elementary problems AV - QA99 .B676 2019 U1 - 510 23 PY - 2019///] CY - Cambridge, UK PB - Open Book Publishers KW - Mathematics KW - Miscellanea KW - Electronic books UR - https://www.nbs.de/bibliothek/faq UR - https://ebookcentral.proquest.com/lib/nbsde/detail.action?docID=5811413 ER -