Instruct: Classify the given review into positive or negative sentiment.
Query: An excellent introduction to the design theory world

This book is filling a gap in the literature to learn the basic techniques in combinatorial designs. It is accessible for any student with a minimum background in mathematics, this makes the book appropriate as a textbook on the subject. The exercises are very well designed too.The bibliography has been carefully selected and any of the papes referenced is classic in this subject.For all these reasons I consider that this book is the right door to start learning about the wonderful world of combinatorial designs.