https://digitalarchive.tpl.ca/internal/media/dispatcher/2068249/fullThe tutor's assistant; being a compendium of arithmetic, and complete question-book... To which is added, a compendium of book-keeping, by Isaac Fisher1839[com.gallerysystems.emuseum.core.entities.RecordXPerson@8af9d9, com.gallerysystems.emuseum.core.entities.RecordXPerson@8e9451, com.gallerysystems.emuseum.core.entities.RecordXPerson@8c9a17]com.gallerysystems.emuseum.core.entities.RecordXPerson@8af9d9com.gallerysystems.emuseum.core.entities.Classification@bbhttps://digitalarchive.tpl.ca/objects/313903/rdf