14 public-domain matches
Spectrum Analysis
New Indicators for the Assessment and Prevention of Noise Nuisance
![Cover of Researches in spectroscopy and permeability [and other articles.]](https://covers.openlibrary.org/b/id/5789260-L.jpg)
Researches in spectroscopy and permeability [and other articles.]

Spectral analysis

The Astrophysical journal

The History Of The Early Postmarks Of The British Isles

The laws of radiation and absorption

Uses, tests for purity and preparation of chemical reagents
