共 50 条
- [3] LOW-LEVEL DRUG ENFORCEMENT [J]. INTERNATIONAL JOURNAL OF THE SOCIOLOGY OF LAW, 1992, 20 (02): : 159 - 171
- [5] LOW-LEVEL LOW-FREQUENCY DETECTION SYSTEM [J]. REVIEW OF SCIENTIFIC INSTRUMENTS, 1962, 33 (11): : 1200 - &
- [9] MODULATION METHODS FOR LOW-LEVEL COUNTING IN PRESENCE OF BACKGROUND [J]. NUCLEAR INSTRUMENTS & METHODS, 1966, 42 (02): : 299 - &