Книга "The World's Most Famous Math Problem. The Proof of Fermat's Last Theorem and Other Mathematical Mysteries". ...

In recent decades, the tremendous biological potential of the highly substituted pyrazole scaffolds have attracted many chemists to synthesize this class of molecules. The classical methods to synthesized pyrazoles and involves the condensation of diketone compound or its synthetic equivalent with hydrazine in appropriate organic solvent....

The national bestseller from Parade\'s \"Ask Marilyn\" columnist?the definitive book for anyone who cares about spelling. Like The Elements of Style and On Writing Well, The Art of Spelling has emerged as a writing manual for the ages, the backlist volume that will tell us everything we will ever want to know about spelling....