ABSTRACT
The book is divided into three parts that are logically connected. The first part defines the principal characteristics of the subterranean world and describes the microorganisms that live there as well as the environmental constraints they are subjected to. The second part shows how the action of the microorganisms can modify the physico-chemical
TABLE OF CONTENTS
part |4 pages
PART I: THE SOIL
part |2 pages
PART II: EFFECTS OF MICROORGANISMS
part |2 pages
PART III: POSSIBILITIES OF INTERVENTION