This edition is written in English. However, there is a running Spanish thesaurus at the bottom of each page for the more difficult English words highlighted in the text.

From Wikipedia:
Mary Lennox is a sickly, sour-faced little girl born in India to wealthy British parents who have very little interest in her, leaving her in the care of an Ayah from birth. Orphaned by an outbreak of cholera, she is sent back to England to the legal guardianship of her only remaining relative: her father's brother-in-law, Archibald Craven, a reclusive widower.

The Handbook of Educational Linguistics is a dynamic, scientifically grounded overview revealing the complexity of this growing field while remaining accessible for students, researchers, language educators, curriculum developers, and educational policy makers.

• A single volume overview of educational linguistics, written by leading specialists in its many relevant fields
  
• Takes into account the diverse theoretical foundations, core themes, major findings, and practical applications of educational linguistics
  
• Highlights the multidisciplinary reach of educational linguistics
  
• Each chapter portrays the complexity of its subject matter while remaining accessible to a wide audience.

Although almost a decade has passed since the second edition of this work was published, this encyclopedia's reputation as a high-quality scholarly work has not diminished. Guided by an advisory board comprising leading researchers (including eight Nobel laureates), editor in chief Meyers (Ramtech, Inc.) used a peer review process that produced over 780 articles written by experts. The coverage in this third edition has expanded to include molecular biology, biochemistry, and biotechnology.

The book consists of five chapters. Chapter 1, Mathematical Background, consists of the material on set theory, induction principles for the natural numbers, and trees and inductive definitions that is required in the remaining chapters. In Chapter 2, Formal Languages, we say what symbols, strings, alphabets and (formal) languages are, introduce and show how to use several string induction principles, and give an introduction to the Forlan toolset. The remaining three chapters introduce and study more restricted sets of languages.