M. Georgii Andreae Helwings ... Lithographia Angerburgica, sive lapidum et fossilium, in districtu Agerburgensi & ejus vicinia, ad trium vel quatuor milliarium spatium : in montibus, agris, arenofodinis & in primis circa lacuum littora & fluviorum ripas, collectorum brevis & succincta consideratio ... (1717)
Helwing, Georg Andreas · literis Iohannis Stelteri · leaf 122
rykofski Sarmatia Europaea Polonice scripta . L . A . Senecae Naturales quaestiones . Genev . 1646 . Wilhelm Ernst Tentzels Monatliche Unterredungen . v Valentini Museum Iuleorum . Fmnckf . 6M MayN . 1704 . ' 161 . Pict . Villing ( iornment . in Marbodaeum de gemm . & lap . pretiosi M . Georgii… … INDEX