The Comparative Stratigraphy of Early Iran
This study formed the basis for a doctoral dissertation prepared under the aegis of Prof. A. T. Olmstead. The writer was fortunate to be able to present this material to Prof. Henri Frankfort's seminar in comparative stratigraphy and to profit in the discussion from many valuable suggestions made by Prof. Frankfort and the members of the seminar. [From SAOC 23, "Preface," p. vii, by McCown]