4. Kobenhavn, Henrik Hoppel, 1929, large in-8°, 345 pp, ills., 7 pl. h/t, index, quarter cloth, gilt lettering on spine, orig. stiff paper wrapper present. Printed in 500 copies. Nice copy. Oeuvre catalogue, 402 items. Text in Danish, summary in French. Johann Friderich Clemens, born 1748 near Stettin (Germany), died 1831.