Complementary blotter Chemist A H Bull. Pied Piper & Children
Licence: In copyright
Credit: Complementary blotter Chemist A H Bull. Pied Piper & Children. Wellcome Collection. Source: Wellcome Collection.
Licence: In copyright
Credit: Complementary blotter Chemist A H Bull. Pied Piper & Children. Wellcome Collection. Source: Wellcome Collection.