共 7 条
[1]
FAMULARI M, 1989, MONTHLY REV DEC, P24
[2]
*MUT OM, 1991, CURR TRENDS HLTH CAR
[3]
*US BUR LAB STAT, 1992, BULL, V2398
[4]
*US BUR LAB STAT, 1991, BULL, V2388
[5]
*US BUR LAB STAT, 1991, BULL, V2389
[6]
*US BUR LAB STAT, 1992, USDL92391
[7]
*US BUR LAB STAT, 1990, BULL, V2363