Internal view of the left valve. After Cossmann (1886).

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Creative Commons Licence
Description: 

Photographer: Cossmann (1886). Publisher: Sartori, André F..

Creator: 
Cossmann (1886)
Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith