Pocket key of trees both wild and cultivated of the northern United States east of the Rocky Mountains Q Science
Data extraction and calibration of TIROS-N/NOAA radiometers / Levin Lauritson, Gary J. Nelson, Frank W. Porto Q Science
Catalogue des oiseaux de la province de Québec avec des notes sur leur distribution geographique Q Science
Thermodynamics and chemistry. A non-mathematical treatise for chemists and students of chemistry Q Science
