. "1892Z"^^ . . . . "1892-06-10Z"^^ . . . "Wolman, Abel"@en . "1989Z"^^ . . "Abel Wolman"@en . "American scientist" . "1989-02-22Z"^^ . . "Abel Wolman (June 10, 1892 \u2013 February 22, 1989) was an American inventor, scientist, professor and pioneer of modern sanitary engineering. His work in supplying clean water spanned eight decades."@en . .