共 21 条
[1]
ANKER JL, 1971, J AMER COLL HEALTH A, V19, P178
[2]
[Anonymous], STATISTICAL PACKAGE
[3]
MULTIPLE DRUG USE CONSIDERED IN LIGHT OF STEPPING-STONE HYPOTHESIS
[J].
INTERNATIONAL JOURNAL OF THE ADDICTIONS,
1972, 7 (01)
:27-+
[4]
FALK JL, 1982, AM PSYCHOL, V37, P1124
[5]
Guttman L., 1950, MEASUREMENT PREDICTI, P60
[6]
HUBA GJ, 1982, J PERS SOC PSYCHOL, V43, P604
[9]
JOHNSTON L, 1973, YOUTH TRANSITION SER, V5
[10]
JOHNSTON LD, 1979, DRUGS NATIONS HIGH S