Jordan Algebras and Algebraic Groups (Ergebnisse der Mathematik und ihrer Grenzgebiete. 2. Folge, 75)

From the reviews: "This book presents an important and novel approach to Jordan algebras. […] Springer's work will be of service to research workers familiar with linear algebraic groups who find they need to know something about Jordan algebras and will provide Jordan algebraists with new techniques and a new approach to finite-dimensional algebras over fields." American Scientist