L Barbara Brown & Stanley B Brown. (1972). Realm of life. V.16: The substance of our world: earth, water and air. Kentucky.
Chicago Edition CitationL Barbara Brown and Stanley B Brown. Realm of Life. V.16: The Substance of Our World: Earth, Water and Air. Kentucky, 1972.
MLA Edition CitationL Barbara Brown and Stanley B Brown. Realm of Life. V.16: The Substance of Our World: Earth, Water and Air. Kentucky, 1972.
Warning: These citations may not always be 100% accurate.