threshold pledge system

fundraising method

en-US/ˈθɹɛʃoʊld ˈplɛd͡ʒ ˈsɪstəm/
en-GB/ˈθɹɛʃəʊld ˈplɛd͡ʒ ˈsɪstəm/

زمرے:

method