DK science the definitive visual guide

Concise encyclopedia of the properties of materials surfaces and interfaces

Gale encyclopedia of world history governments.

Available for University of the Philippines System via Gale Virtual Reference Library. Click here to access

Van Nostrand's scientific encyclopedia.

Encyclopedia of soil science

Gale encyclopedia of world history governments.

Available for Case Western Reserve University via Gale Virtual Reference Library. Click here to access

Gale encyclopedia of world history governments.

Available for Case Western Reserve University via Gale Virtual Reference Library. Click here to access

Van Nostrand's scientific encyclopedia Glenn D. Considine, editor-in-chief ; Peter H. Kulik, associate editor.

International encyclopedia of the social sciences

Gale encyclopedia of world history governments.

Available for University of the Philippines Diliman via Gale Virtual Reference Library. Click here to access