Blar i Rapportserien / Report series på forfatter "Fjeld, Per Espen"
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Catalogue of seabird colonies in Svalbard
Mehlum, Fridtjof; Fjeld, Per Espen (Rapport;35, Research report, 1987) -
The Northern Sea route programme - environmental factors: introductory notes on available literature
Brekke, Bente; Fjeld, Per Espen (Rapport;70, Research report, 1991)