Foreword -- Acknowledgement -- Chapter I. DEVELOPMENTS IN KNOWLEDGE OF PLANT DERIVED NATURAL PRODUCTS PHARMACOGNOSY IN THE 21ST CENTURY -- Chapter II. QUALITY REQUIREMENTS FOR HERBAL DRUGS; ANALYTICAL METHODS -- Chapter III. BIOSYNTHESIS OF PLANT SUBSTANCES; BIOGENETIC RELATIONSHIPS -- Chapter IV. DISCUSSION OF HERBAL DRUGS BASED ON THE BIOGENETIC CLASSIFICATION OF THEIR MAIN ACTIVE COMPONENTS -- Chapter V. BIOLOGICAL ACTIVITY OF COMPOUNDS OF PLANT ORIGIN -- Chapter VI. PLANT BIOTECHNOLOGY -- Chapter VII. APPENDIX -- Abbreviations.