"Herchel" . . . . "organische chemie mbt. ammonia"@nl . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . "Smith, Herchel" . "Smith" . "Herchel Smith" . . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . _:Bc3e49e2b1c03f4d83b4189d3c878c14b "2023-05-22"^^ . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . _:Bc3e49e2b1c03f4d83b4189d3c878c14b "067728758" . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . _:Bc3e49e2b1c03f4d83b4189d3c878c14b . _:Bc3e49e2b1c03f4d83b4189d3c878c14b .