On the trematode fauna of fish-eating birds in Kamchatka. In: Leonov, V. A., Mamaev, Y. L., Oshmarin, P. G. (Eds.) - Leonov, V. A., Belogurov, O. I., Shagvaleeva, N. M., Bondarenko, S. K. (Parasitic woгms оf dоmеstic and wild animals, 1965)