Zim, Herbert Spencer

Includes information on collecting and identifying minerals, and sections on metallic, nonmetallic, gem and rock-forming minerals, and on igneous, sedimentary and metamorphic rocks.

A guide to North American insects which gives popular name, describes life and reproduction cycles and feeding habits, and includes a range guide.

Discusses such aspects of the composition and functions of blood as the manufacture of red blood cells, blood type and Rh factor, lymph, clotting, disease and antibodies, and the transportation of oxygen, hormones, and food.

Includes information on collecting and identifying minerals, and sections on metallic, nonmetallic, gem and rock-forming minerals, and on igneous, sedimentary and metamorphic rocks.

A guide to North American insects which gives popular name, describes life and reproduction cycles and feeding habits, and includes a range guide.

Includes information on collecting and identifying minerals, and sections on metallic, nonmetallic, gem and rock-forming minerals, and on igneous, sedimentary and metamorphic rocks.