RARE study by the renowned French-Jewish scholar and rabbi Isidore Loeb (1839-1892), in which he argues that all the biblical Psalms were written by a class of poor Jews, as well as Deutero-Isaiah, whose many prophecies deal with the same theme. 240x170mm. XV+280 pages. Patterned embroidered-like fake leather rebound Hardcover with cloth spine. Gilt lettering on spine. Small scratch-mark on spine front hinge. Spine edges rubbed. Original in-bound softcover stained/dirty. Inner cover age-stained. Pen writing on pre-title page bottom left corner. Small stamp on title page verso bottom edge. Several pages slightly age-stained. Pages yellowing. [SUMMARY]: This extremely rare monograph on Biblical sources is in good condition.