@article{545980,
      note = {The dedication signed: Joannes Walker.},
      author = {Walker, John,},
      url = {http://library.usi.edu/record/545980},
      title = {Classes fossilium sive, characteres naturales et chymici  classium et ordinum in systemate minerali; cum nominibus  genericis adscriptis. In usus academicos. [electronic  resource] :},
      publisher = {[s.n.],},
      recid = {545980},
      pages = {[2],xxvii,[1],108p. ;},
      address = {Edinburgi :},
      year = {1787},
}