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- Author(s):
- Hopkins, H. R. (Henry Reed), 1844- author
- Publication:
- [Buffalo?] : [publisher not identified], [1885?]
- Subject(s):
- Blood Pressure Determination -- instrumentation
- Author(s):
- Hopkins, H. R. (Henry Reed), 1844- author
- Publication:
- [Buffalo?] : [publisher not identified], [1887?]
- Subject(s):
- Psychophysiology