共 16 条
[3]
BENZ J, 1997, ECOMOD 1201
[4]
BENZ J, 1997, DOCUMENTATION MATH F
[5]
BOOCH G, 1994, OBJECT ORIENTED ANAL
[6]
CHRISTOPHEL T, 1997, UMMELTINFORMATIK 97
[7]
Ellenberg H, 1974, AIMS METHODS VEGETAT
[8]
*FAO, 1990, SOIL B FAO, V60