 An extensive critical apparatus is included listing variant readings found in previously published manuscripts of the Samaritan Pentateuch.His work is still regarded as being generally accurate despite the presence of some errors, but it neglects important manuscripts including the Abisha Scroll which had not yet been published at the time.Textual variants found in the Abisha scroll were published in 1959 by Federico Pérez Castro and between 1961 and 1965 by A. and R. Sadaqa in "Jewish and Samaritan Versions of the Pentateuch – With Particular Stress on the Differences Between Both Texts".