"Encyclopedias and dictionaries Treatment 18th century Early works to 1800 Great Britain." . . "Encyclopædia perthensis; or Universal dictionary of knowledge, collected from every source and intended to supersede the use of all other English books of reference. Illustrated with plates and maps. In twenty three volumes" . "Encyclopædia perthensis; or Universal dictionary of knowledge, collected from every source and intended to supersede the use of all other English books of reference. Illustrated with plates and maps. In twenty three volumes"@en . . . . "Early works" . "Early works"@en . . . "Encyclopaedia Perthensis : or Universal dictionary of knowledge, collected from every source ; and intended to supersede the use of all other English books of reference. Illustrated with plates and maps. In twenty three volumes"@en . . . . . . . . . "Great Britain Scotland Perth." . .