Columbia subject headings:
Judaism--History--Modern period, 1750-
Orthodox Judaism--History.
Proselytizing--Judaism.
Responsa--1800-1948--History and criticism.
Harvard subject headings:
Conversion--Judaism
Judaism--History--Modern period, 1750-
Orthodox Judaism--History.
Responsa--1800-1948--History and criticism.
Princeton subject headings:
Jewish converts.
Judaism--History--Modern period, 1750-
Orthodox Judaism--History.
Proselytizing--Judaism.
Responsa--1948---History and criticism.