CONTENTS:-
INTRODUCTION : GYMNOSPERMS, 2. CLASSIFICATION : GYMNOSPERMS, 3. GYMNOSPERMS : ALTERNATION OF GENERATIONS, 4. CYCAS, 5. PINUS, 6. EPHEDRA, 7. ECONOMIC IMPORTANCE OF GYMNOSPERMS, 8. COMPARATIVE ACCOUNT OF CYCAS, PINUS AND EPHEDRA, 9. INTRODUCTION : PALAEOBOTANY, 10. FOSSILS AND FOSSILIZATION, 11. GEOLOGICAL TIME SCALE, 12. LIVIND FOSSILS, 13 BIRBAL SAHNI