His second-most popular work was the Otzar ha-shorashim, a lexicon of Hebrew roots and Hebrew-German dictionary, inspired by the work of David Kimḥi.[9][16] First published in Vienna between 1806 and 1808, the book went through six editions up to 1880.[17] Ben-Ze'ev's Mesillat ha-limmud, a grammatical work for school-age children,[18] was translated into Italian by Leon Romani (Vienna, 1825) and into Russian by Abraham Jacob Paperna (Warsaw, 1871).[19]