共 20 条
[2]
BAAR J, 1993, EUROPEAN FOREST RESE, P249
[3]
Baar J, 1993, FUNGI EUROPE INVESTI, P275
[5]
Dahlberg A., 1991, THESIS SWEDISH U AGR
[6]
DEVRIES BWL, 1985, WETENSCHAPPELIJKE ME, V167, P74
[7]
Finlay R. D., 1989, Ecology of arable land-perspectives and challenges. Proceedings of an International Symposium, 9-12 June 1987, Swedish Univ. Agric. Sci., Uppsala, Sweden., P139
[10]
KLAP JM, 1992, HINKELOORD REPORTS, V2, P1