Theoretical estimation of the mean echo intensity - fish number density relation for encaged saithe in the dorsal aspect ; Variation in zooplankton volumes at the permanent oceanographic stations along the Norwegian coast and at weathership station M(ike) in the Norwegian Sea during the years 1949 - 1972 ; Phytoplankton observations in offshore Norwegian coastal waters between 62'N and 69 'N I. Variation in time of the spring diatom maximum 1968 - 71
Bok Engelsk 1978