A Guide to the Mineral Gallery ... With an Introduction to the study of Minerals. [By L. Fletcher (1889)
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British Library · HMNTS 7106.b.43. · Digitised by the British Library with Microsoft · No known copyright restrictions (public domain). Free to use for anything.
![An illustration from Divina proportione : opera a tutti glingegni perspicaci e curiosi necessaria oue ciascun studioso di philosophia: prospettiua pictura sculptura: architectura: musica: e altre mathematice: suavissima: sotile: e admirabile doctrina consequira: e delecterassi: co[n] varie questione de secretissima scientia (1509)](https://img.insideoutlibrary.com/img/200/ia-divinaproportion00paci-224-424.webp)
