1924 80 p., num. figs & photographs, paperbound. With ex libris / bookplate of Dr. W. Vervoort on half-title. Very good copy.
, Amsterdam, Andries Blitz, s.d., 320pp.geïll. + 127 buitentekstills., linnen band (wat slijtage), roestvlekjes, stempel, 2e druk