Science

Prolegomena

Immanuel Kant

Ideen zu einer reinen Phänomenologie und phänomenologischen Philosophie

Edmund Husserl

The Dragons of Eden

Carl Sagan

Environmental science

G. Tyler Miller

Geography

Harm J. de Blij

Far away and long ago

W. H. Hudson

Handbook of Flowering

Abraham H. Halevy

Handbook of learning and cognitive processes

William K. Estes

The Evolution of Man

Ernst Haeckel

Progress in Optics

Emil Wolf

Nutrition

Frances Sizer Webb

Solid State Physics

Frederick Seitz

Federal research

United States. General Accounting Office

Das Finanzkapital

Rudolf Hilferding

Horizons

Michael A. Seeds

An Examination of Sir William Hamilton's Philosophy

John Stuart Mill

Handbook of nature-study for teachers and parents

Anna Botsford Comstock

Microbiology

John Wade Foster

Herrn Eugen Dührings Umwälzung der Wissenschaft

Friedrich Engels

The Intelligent Man's Guide to Science

Isaac Asimov