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(1983) - Norwegian University of Life Sciences, Ås Skjervold, Harald Bok - in NMBU -
(1976) - Norwegian University of Life Sciences, Ås Breirem, Knut Bok - in NMBU -
(1982) - Norwegian University of Life Sciences, Ås Homb, Thor Bok - in NMBU -
(1970) - Norwegian University of Life Sciences, Ås Breirem, Knut Bok - in NMBU -
(1969) - Norwegian University of Life Sciences, Ås Balvoll, Gudmund Bok - in NMBU -
(1963) - Norwegian University of Life Sciences, Ås Steinsholt, Kjell Bok - in NMBU -
(1967) - Norwegian University of Life Sciences, Ås Selmer-Anderssen, Chr. Bok - in NMBU -
(1967) - Norwegian University of Life Sciences, Ås Reisæter, Oddvin Bok - in NMBU -
(1983) Sundheim, Leif Bok - in NMBU -
(1973) - Norwegian University of Life Sciences, Ås Sundheim, Leif Bok - in NMBU -
(1982) - Norwegian University of Life Sciences, Ås Sundheim, Leif Bok - in NMBU -
(1982) - Norwegian University of Life Sciences, Ås Hofsvang, Trond Taksdal, Gudmund
Bok - in NMBU -
(1981) - Norwegian University of Life Sciences, Ås Hofsvang, Trond Bok - in NMBU -
(1973) - Norwegian University of Life Sciences, Ås Gabrielsen, Egil Bok - in NMBU -
(1969) - Norwegian University of Life Sciences, Ås Sundheim, Leif Bok - in NMBU