The Nature of Melachah
From the OU Press publication The Concise Code of Jewish Law: A Guide to the Observance of Shabbat by Rabbi Gersion Appel, updated and revised by Rabbi Daniel Goldstein.
From the OU Press publication The Concise Code of Jewish Law: A Guide to the Observance of Shabbat by Rabbi Gersion Appel, updated and revised by Rabbi Daniel Goldstein.