@dataset{currentDoc,
  author = {},
  title = {Mine Centre Ontario. 1:50,000. Map Sheet 052C15, ed. 1, 1969},
  publisher = {Other Borealis Collections},
  issued = {1969-01-01},
  howpublished = {{\url{https://doi.org/10.5683/SP3/L0L96A}}}
}