Olofsson, E. (1988). Epizootiology of the nuclear polyhedrosis virus of the European pine sawfly, Neodiprion sertifer (Fourcroy) (Hymenoptera, Diprionidae). Swedish University of Agricultural Sciences, Dept. of Plant and Forest Protection, Division of Forest Entomology.
Chicago Style aipamenaOlofsson, Einar. Epizootiology of the Nuclear Polyhedrosis Virus of the European Pine Sawfly, Neodiprion Sertifer (Fourcroy) (Hymenoptera, Diprionidae). Uppsala, Sweden: Swedish University of Agricultural Sciences, Dept. of Plant and Forest Protection, Division of Forest Entomology, 1988.
MLA aipamenaOlofsson, Einar. Epizootiology of the Nuclear Polyhedrosis Virus of the European Pine Sawfly, Neodiprion Sertifer (Fourcroy) (Hymenoptera, Diprionidae). Swedish University of Agricultural Sciences, Dept. of Plant and Forest Protection, Division of Forest Entomology, 1988.