Columbia subject headings:
Jewish law.
Responsa--1800-1948.
Talmud. Shabbat--Commentaries.
Harvard subject headings:
Responsa--1800-
Talmud. Shabbat--Commentaries.
Princeton subject headings:
Jewish law.
Judaism--Customs and practices.
Responsa--1800-1948.
Talmud. Shabbat--Commentaries.