Three Encyclopedias in One Resource: Adult, Student and Children's The Easy All-in-One Research Companion for ALL Ages

3D Respiratory System. This is a medical application to learn and study the diferntes the respiratory system. Include the respiratory system in 3D with the mouse to rotate it, and appreciate its parts. It also includes an encyclopedia on the respiratory system, anatomy, parts, performance, and disease.

Chess Combinations Encyclopedia your doorway to tactics in chess! This fundamental Russian-authored program on chess tactics revs up your game with more than 4,000 easy-to-follow training examples and exercises, classified by over 100 tactical methods and motifs. Exercises grow more complex with each theme, from beginner to advanced players. It's effortless to calculate individual rating on the basis of each user's performance and statistics; data is gathered by the program. If the user follows each theme step by step, then mastering all given tactical methods is quite simple. Count on a better all-around game with Chess Combinations Encyclopedia.