A comprehensive reference dictionary providing definitions and explanations of chemical substances, terminology, and related concepts, widely used by chemists, engineers, and students.
Comprehensive reference covering the chemistry of all the elements of the periodic table, with detailed discussion of structure, properties, reactions, and applications.
A standard grammar reference and exercise book, Living English Structure presents clear explanations of English grammar structures with practical exercises. Written by W. Stannard Allen and published by Longman, it has been widely used in English teaching worldwide.
This practice book provides exercises on conditionals, unreal pasts, gerund, infinitive, and passive forms. It is part of the supplementary exercises to A Practical English Grammar by Thomson & Martinet.
A comprehensive introduction to general chemistry, emphasizing the molecular view of matter and change. Includes numerous worked examples and illustrations to aid understanding.
A concise introduction to English grammar covering fundamental structures, suitable for students and teachers.