<note xmlns="http://www.tei-c.org/ns/1.0" hand="#author" place="mTop"><bibl corresp="https://edition-humboldt.de/3BGRUCH2"><choice> <abbr>Extr.</abbr> <expan>Extrait</expan> </choice> de <persName ref="https://edition-humboldt.de/H0001522 https://d-nb.info/gnd/116615168">Kupfer</persName><supplied cert="high">,</supplied> <choice> <abbr>Pogg.</abbr> <expan>Poggendorf</expan> </choice> 1829 <choice> <abbr>St</abbr> <expan>Stück</expan> </choice> 2 <choice> <abbr>p</abbr> <expan>page</expan> </choice> 16<unclear reason="illegible" cert="low">3</unclear></bibl></note> Isogeothermen<choice xmlns="http://www.tei-c.org/ns/1.0"> <orig>.</orig> <reg type="deleted" /> </choice>