Practice Makes Perfect in Chemistry: Chemical Bonding    by John Parnell
Price: $1.99 USD. 4330 words. Published on February 22, 2010. .
One of the best ways to succeed in Chemistry is to practice taking real test questions. This volume contains 113 problems on Chemical Bonding divided into three chapters: Bond Energy and Electronegativity, Bond Types, and Bond and Molecular Polarity. Try the problems. With a little Practice, Practice, Practice, you’ll be Perfect, Perfect, Perfect. Good Luck!

Practice Makes Perfect in Chemistry: Chemical Bonding with Answers    by John Parnell
Price: $3.99 USD. 4640 words. Published on March 3, 2010. .
One of the best ways to succeed in Chemistry is to practice taking real test questions. This volume contains 113 problems on Chemical Bonding divided into three chapters: Bond Energy and Electronegativity, Bond Types, and Bond and Molecular Polarity. All answers are provided. Try the problems. Check your answers. With a little Practice, Practice, you’ll be Perfect, Perfect, Perfect. Good Luck!!

A Crackpot's Notebook, Volume 1    by Scott Reeves
Price: $2.99 USD. 68360 words. Published on August 22, 2011. .
A notebook of the musings of a self-confessed crackpot. Arguments against Einstein and relativity. Random thoughts on the nature of space, time and gravity. This volume is chock full of ideas that could very well point the way to the next revolution in science. No idea is off limits for a crackpot.