August's reference book of the month is The Encyclopedia of Science and Technology. The description below is from Amazon:
Edited by acclaimed science writer and physicist James Trefil, the Encyclopedia's 1000 entries combine in-depth coverage with a vivid graphic format to bring every facet of science, technology, and medicine into stunning focus. From absolute zero to the Mesozoic era to semiconductors to the twin paradox, Trefil and his co-authors have an uncanny ability to convey how the universe works and to show readers how to apply that knowledge to everyday problems.
~ Recommended for students majoring in the Sciences, as well as Technology and Applied Design majors ~