Asui Lehishtamesh B'shefah (Bitul and Blios #34 - Shulchan Aruch YD 99:7)
Rabbi Dovid Cohen
Asui Lehishtamesh B'shefah (עשוי להשתמש בשפע): Rashba; Logic; First source; Pegam and Aino ben yomo; Second source; Halacha; Questions. See seforim by Rabbi Cohen at www.kashrushalacha.com