共 9 条
[1]
COHN L, 1992, FOREST PERSPECTIVES, V2, P7
[2]
LEONARD G, 1980, COMMUNITY STABILITY, P79
[3]
MADIGAN E, 1991, PUTTING PIECES ANN R
[4]
ROBERTSON D, 1992, MAY ANN W REG M NAT, P2
[5]
ROBERTSON D, 1990, COMMUNICATION 0628
[6]
THOMAS MM, 1990, FIELD KEY IDENTIFICA, P2
[7]
*US DEP AGR, 1990, FOR SERV PROG FOR RA, pS1
[8]
*US DEP AGR, 1991, EUR RUR AM NAT RES P, P3
[9]
*US DEP AGR, 1990, STRAT PLAN 90S WORK