The SRTC, according to its mission to promote the statistical knowledge of society, in addition to conducting research projects and writing books, has chosen the translation and publication of authoritative foreign sources as a policy and a suitable way to be updated on the world knowledge. The translation of the present book is one of the measures that have been included in the agenda of the SRTC to implement this policy, and it is hoped that it will be useful for researchers and students in the field of statistics and related fields. Since there are few samples, or no sample, statistical areas, at low geographical levels, and it is important to obtain reliable statistics in such areas, it is necessary to address small area estimation methods as one of the required sampling methods. The main purpose of this book is to provide a comprehensive report on the methods and theory of small-area estimation, especially indirect estimation based on explicit small-area linking models. The translation of the present book has been done by the honorable professor, Dr. Mohammad Reza Meshkani, and it is edited by Dr. Hamid Reza Navabpour