Hilchot Tefillin and Sofrim in a two volume set

First Vol: Hanachat Tefillin, Kedushat Tefillin, Rabbenu Tam

Second Vol: Parchment, Hebrew Letters, Sofer Stam, Battim and Straps

Collation of the works of Ovadia Yosef is an authoritative, contemporary work of Halakha, providing a detailed explanation of the Shulchan Aruch as based on the halachic rulings of the former Rishon LeTzion Rav Ovadia Yosef. It was written by Rabbi Yitzhak Yosef, his son.