Natural Resources Research
Natural Resources Research > 2000 > 9 > 4 > 307-313
Natural Resources Research > 2000 > 9 > 4 > 257-268
Natural Resources Research > 2000 > 9 > 4 > 315-319
Natural Resources Research > 2000 > 9 > 4 > 277-293
Natural Resources Research > 2000 > 9 > 4 > 269-276
Natural Resources Research > 2000 > 9 > 4 > 295-305
Natural Resources Research > 2000 > 9 > 4 > 321-331