. . . . . . . . . . "Electronic books"@en . . . . "A short essay on the composition of Ĺ“conomical fuel, and of various mixtures that may be used with coal, to produce a clear saving of one-third part of the expence of keeping up fires in general"@en . . . "A short essay on the composition of oeconomical fuel and of various mixtures that may be used with coal, to produce a clear saving of one-third part of the expence of keeping up fires in general" . "A short essay on the composition of oeconomical fuel and of various mixtures that may be used with coal, to produce a clear saving of one-third part of the expence of keeping up fires in general"@en . . . "Early works"@en . . . "A short essay on the composition of oeconomical fuel, and of various mixtures that may be used with coal, to produce a clear saving of one-third part of the expence of keeping up fires in general" . "Short essay on the composition of economical fuel"@en . "Coal." . . "Fuel." . .