Subjects: “…[Camping, H., Pot, C., Lutz, H.,, Kamphorst, T.J., Luijn, J.M. van., Smidt, M. de., Brug, F. v.d., Verduin, A.A., Muller, K., Hijman, F., Cornelisse, W., Engelen, M., Wit, Cornelis de., Rottier, Chiel., Anderiesen, Gerard., Kruijt, B., Kreukels, A.M.J., Vogelzang, P., Luyn-Van Amelrooy, P.M.J. van., Biographica.]…”

Subjects: “…[Holiday camps.]…”

Subjects: “…[Holiday camps.]…”

Subjects: “…[Holiday camps., Children.]…”

Subjects: “…[Holiday camps., Children.]…”

Subjects: “…[Holiday camps., Children.]…”

Subjects: “…., Bijsterveld, O.P. van., Camp, W., Bakker Schut, Pieter H., Nauta, L.W., Copper, D., Leeuw, André de., Hek, Arie van der., Dees, D.J.D., Biographica.]…”