Gaither's Dictionary of Scientific Quotations
A Collection of Approximately 27,000 Quotations Pertaining to Archaeology, Architecture, Astronomy, Biology, Botany, Chemistry, Cosmology, Darwinism, Enginee... »

Naturally Speaking
A Dictionary of Quotations on Biology, Botany, Nature and Zoology »

Physically Speaking
A Dictionary of Quotations on Physics and Astronomy »

Practically Speaking
Dictionary Of Quotations On Engineering, Technology And Architecture »

Mathematically Speaking
A Dictionary Of Quotations »

Gaither's Dictionary Of Scientific Quotations
Gaithers Dictionary of Scientific Quotations »