THIS ISSUE CONTAINS “FIFTY YEARS OF EXCAVATIONS AND RESEARCHES AT ARSLANTEPE-MALATYA (TURKEY). A CONTRIBUTION TO THE STUDY OF THE EARLIEST CENTRALISED SOCIETIES” Proceedings of the International Conference held in Rome on 5-7 December, 2011 to celebrate the 50th anniversary of the Sapienza University expedition at Arslantepe.The volume is organised in five thematic sections, each referring to a topic on which the excavations at Arslantepe have obtained results, and presenting contributions by both members of the Arslantepe team and other scholars working on the same topic in other sites or regions of the Near East. The objective was to relate the Arslantepe achievements with other outcomes, in the framework of the current debate. Thematic sections in the volume: THE DEVELOPMENT OF SOCIAL COMPLEXITY IN THE LATE CHALCOLITHIC (5TH AND 4TH MILLENNIA BC) Arslantepe in the 5th and 4th millennia M. Frangipane, F. Balossi Restelli, M.B. D'Anna and P. Guarino, H. Pittman, H. Çaliskan Akgül, G. Siracusano and L. Bartosiewicz Late Chalcolithic developments in other regions of the Near East G. Stein, S. Pollock, J. Oates, P. Butterlin, B. Helwing, S. Gülçür. ARSLANTEPE IN THE EARLY BRONZE AGE: FAR-REACHING CHANGES AND THE RISE OF NEW SOCIETIES M. Frangipane, G. Palumbi, P. Piccione and C. Lemorini, Y.S. Erdal, R. Laurito. ON THE MARGINS OF EMPIRES: MALATYA AND THE HITTITEWORLD M. Liverani, C. Alvaro, F. Manuelli, S. de Martino, C. Mora and L. d'Alfonso, S. Mazzoni, A. Archi. ENVIRONMENT AND SOCIETY. ENVIRONMENTAL CONDITIONS, AGRICULTURE AND TECHNOLOGY IN THE MALATYA PLAIN S. Dreibrodt, C. Lubos, J. Lomax, T. Schroedter and O. Nelle, L. Sadori and A. Masi, G. Liberotti and R. Quaresima. CONSERVATION AND EXHIBITION OF ARCHAEOLOGICAL SITES M. Özdögan and Z. Eres, D. Mangano.