Authors: VIRKKALA R RAJASARKKA A VAISANEN RA VICKHOLM M VIROLAINEN E

Citation: R. Virkkala et al., THE SIGNIFICANCE OF PROTECTED AREAS FOR THE LAND BIRDS OF SOUTHERN FINLAND, Conservation biology, 8(2), 1994, pp. 532-544

Authors: VIRKKALA R RAJASARKKA A VAISANEN RA VICKHOLM M VIROLAINEN E

Citation: R. Virkkala et al., CONSERVATION VALUE OF NATURE-RESERVES - DO HOLE-NESTING BIRDS PREFER PROTECTED FORESTS IN SOUTHERN FINLAND, Annales zoologici Fennici, 31(1), 1994, pp. 173-186

Authors: VIRKKALA R

Citation: R. Virkkala, RANGES OF NORTHERN FOREST PASSERINES - A FRACTAL ANALYSIS, Oikos, 67(2), 1993, pp. 218-226

Authors: VIRKKALA R ALANKO T LAINE T TIAINEN J

Citation: R. Virkkala et al., POPULATION CONTRACTION OF THE WHITE-BACKED WOODPECKER DENDROCOPOS-LEUCOTOS IN FINLAND AS A CONSEQUENCE OF HABITAT ALTERATION, Biological Conservation, 66(1), 1993, pp. 47-53