共 8 条
[1]
AXTELL RC, 1981, USDA SCI ED ADM A106, V2, P26
[2]
GREENBERG DF, 1982, METHODOLOGICAL DEV C, P15
[3]
KEIDING J, 1976, WHOUBC76650 REP
[4]
Larsen E.B., 1940, VIDENSK MEDD DANSK N
[6]
WILDEY KB, 1979, ADAS Q REV, V34, P187
[7]
1981, REFERENCE BOOK MINIS, P47
[8]
1982, REFERENCE BOOK MINIS, P57