Mycobacteria is divided into two volumes. The first volume deals with the basic biology of mycobacteria. With its emphasis on the state of the art outlook, this volume includes taxonomy and molecular biology of mycobacteria, modern approaches for detection of mycobacteria, and immunology and immunization against tuberculosis. The second volume covers drug trestments for mycobacteria anad tuberculosis. It outlines trends of discovery and development of chemotherapy, starting from the mid-50's to present day uses of chemotherapy in treating AIDS, drug-resistant tuberculosis, and other non-tuberculosis mycobacterial diseases.

This volume brings together revised and up-dated versions of Giles Constable's classic essays on crusading in the 12th century, along with two major new studies on the cross of the crusaders and the Fourth Crusade, and two excursuses on the terminology of crusading and the numbering of the crusades. Together they show the range and depth of the crusading movement at that time and its influence on the broader history of the period.