共 8 条
- [1] DERWINSKI EJ, 1969, CONGRESSIONAL RECORD, V115, P3622
- [3] GARDNER JW, 1969, DEC NAT PRESS CLUB W
- [4] KNOWLES JH, 1969, J MED EDUC, V44, P81
- [5] VARIATIONS IN INCIDENCE OF SURGERY [J]. NEW ENGLAND JOURNAL OF MEDICINE, 1969, 281 (16) : 880 - &
- [6] SMITH RA, 1970, J AMER MED ASSOC, V211, P1843
- [7] 1967, HUMAN INVESTMENT PRO
- [8] 1969, JAMA, V210, P2078