Riding on the crest of the wave : possibilities and limitations for a thriving population of migratory cormorants Phalacrocorax carbo in man-dominated wetlands / Mennobart van Eerden, Kees Koffijberg & Maarten Platteeuw (ed.)Oystercatchers and their estuarine food supplies / Anne-Marie Blomert ... [et al.] (eds.) ; [photo's: Bruno J. Ens ... et al.]Bird ringing 100 years : proceedings of the international conference on Helgoland, 29 September - 3 October 1999 / Lukas Jenni (guest ed.) ; Kees Camphuysen (technical ed.)Limosa : tijdschrift van NOU en SOVON