Joh. Joachimi Beccheri ... Physica subterranea profundam subterraneorum genesin e principiis hucusque ignotis ostendens : opus sine pari, primum hactenus et princeps (1738)
Becher, Johann Joachim, 1635-1682, Stahl, Georg Ernst, 1660-1734. Specimen Beccherianum · Lipsiae : Ex officina Weidmanniana · leaf 4
Phlogiston · Alchemy
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from Museum regium, seu, Catalogus rerum tam naturalium, quam artificialium, quae in basilica bibliothecae augustissimi Daniae Norvegiaeq[ue] monarchae Christiani Quinti, Hafniae asservantur (1696)](https://img.insideoutlibrary.com/img/200/ia-museumregiumseuc00jaco-290-115.webp)
