As early as 1917 [Janiszewski and Mazurkiewicz] were conducting a topology seminar, presumably the first in that new, exuberantly developing field.
Nang maaga bilang 1917 [Janiszewski at Mazurkiewicz] ay magsagawa ng isang topology pantas-aral, siguro ang mga unang na sa bagong, exuberantly pag-unlad na larangan.