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Dioptricæ pars prima

TitleDioptricæ pars prima
Publication TypeBook
Year of Publication1769
AuthorsEuler, L
CitySt Petersburg
LibraryHenry E. Huntington Library
BindingHalf bound with the stamp at the foot of the cover close to the spine
Stamp(s): 

Unidentified Stamp

Unidentified Stamp
Dimensions:
Crest A demi stag azure Motto LABOREMUS
Possibilities for Identification: 
Fairbairn’s Crest, plate 119/2 lists 40 families who used this crest, but no trace of the motto could be found.
Heraldic Charges: