There are 4 titles associated with this person.

@book{ wphp_14627
  author={Troil,Uno Von},
  year={1780},
  title={Letters on Iceland: Containing Observations on the Civil, Literary, Ecclesiastical, and Natural History; Antiquities, Volcanos, Basaltes, Hot Springs; Customs, Dress, Manners of the Inhabitants, &c. &c. Made during a Voyage Undertaken in the Year 1772, by Joseph Banks, Esq., F.R.S. Assisted by Dr. Solander, F.R.S. Dr. J. Lind, F.R.S. Dr. Uno von Troil, and Several Other Literary and Ingenious Gentlemen. Written by Uno von Troil, D.D. First Chaplain to His Swedish Majesty, Almoner of the Swedish Orders of Knighthood, and Member of the Academy of Sciences at Stockholm. To Which Are Added the Letters of Dr. Ihre and Dr. Bach to the Author, Concerning the Edda and the Elephantiasis of Iceland: Also, Professor Bergman’s Curious Observations and Chemical Examination of the Lava and Other Substances Produced on the Island. With a New Map of the Island, and a Representation of the Remarkable Boiling Fountain Called by the Inhabitants Geyser.},
  publisher={Samuel Price [Henry Street] \& William and Henry Whitestone \& James Potts \& Thomas Walker \& Caleb Jenkin [58 Dame Street] \& Luke White [6 Crampton Street] \& John Beatty [Skinner Row] \& Patrick Higly \& Patrick Byrne II [Temple Bar] \& W. Halhead},
  address={Dublin},    }
@book{ wphp_14594
  author={Troil,Uno Von},
  year={1780},
  title={Letters on Iceland: Containing Observations on the Civil, Literary, Ecclesiastical, and Natural History; Antiquities, Volcanos, Basaltes, Hot Springs; Customs, Dress, Manners of the Inhabitants, &c. &c. Made during a Voyage Undertaken in the Year 1772, by Joseph Banks, Esq., P.R.S. Assisted by Dr. Solander, F.R.S. Dr. J. Lind, F.R.S. Dr. Uno von Troil, and Several Other Literary and Ingenious Gentlemen. Written by Uno von Troil, D.D. First Chaplain to His Swedish Majesty, Abaquer of the Swedish Orders of Knighthood, and Member of the Academy of Sciences at Stockholm, to Which Are Added the Letters of Dr. Ihre and Dr. Bach to the Author, Concerning the Edda and the Elephantiasis of Iceland: Also Professor Bergman’s Curious Observations and Chemical Examination of the Lava and Other Substances Produced on the Island. With a New Map of the Island, and a Representation of the Remarkable Boiling Fountain Called by the Inhabitants Geyser.},
  publisher={James Robson \& Nathaniel Conant [Fleet Street] \& William Richardson [printer, Strand]},
  address={London},    }
@book{ wphp_14625
  author={Troil,Uno Von},
  year={1780},
  title={Letters on Iceland: Containing Observations on the Civil, Literary, Ecclesiastical, and Natural History; Antiquities, Volcanos, Basaltes, Hot Springs; Customs, Dress, Manners of the Inhabitants, &c. &c. Made during a Voyage Undertaken in the Year 1772, by Joseph Banks, Esq., P.R.S. Assisted by Dr. Solander, F.R.S., Dr. J. Lind, F.R.S., Dr. Uno von Troil, and Several Other Literary and Ingenious Gentlemen. Written by Uno von Troil, D.D. First Chaplain to His Swedish Majesty, Almoner of the Swedish Orders of Knighthood, and Member of the Academy of Sciences at Stockholm. To Which Are Added the Letters of Dr. Ihre and Dr. Bach to the Author, Concerning the Edda and the Elephantiasis of Iceland: Also Professor Bergman’s Curious Observations and Chemical Examination of the Lava and Other Substances Produced on the Island. With a New Map of the Island, and a Representation of the Remarkable Boiling Fountain Called by the Inhabitants Geyser. Second Edition, Corrected and Improved.},
  publisher={James Robson \& Nathaniel Conant [Fleet Street] \& William Richardson [printer, Strand]},
  address={London},    }
@book{ wphp_14626
  author={Troil,Uno Von},
  year={1783},
  title={Letters on Iceland: Containing Observations on the Natural History of the Country, Antiquities, Manners and Customs of the Inhabitants, &c. &c. Made During a Voyage Undertaken in the Year 1772, By Sir Joseph Banks, P.R.S., Assisted by Dr. Solander, F.R.S, Dr. J. Lind, F.R.S, and Several Other Literary and Ingenious Gentlemen. Written by Uno Von Troil, D.D., Chaplain to his Swedish Majesty, &c. &c. with Notes and Additions by the Translator. The Whole Revised and Corrected by E. Mendes Da Costa. The Third Edition.},
  publisher={James Robson \& William Richardson [printer, Strand]},
  address={London},    }