Moisture Cycles and Stone Degradation; Biodeterioration; Risk Factors and their Management; Development of Air Pollution Damage Functions; Perspectives on Risks to Architectural Heritage; Structural Behaviour and Durability of Stone Masonry's; Nondestructive Test Methods Applicable to Historic Stone Structures; Methodologies for the Evaluation of Treatment Options; New Materials and Approaches for the Conservation of Stone; The Methods for the Evaluation of Stone Conservation Treatments; Ethical Considerations in the Selection of Treatment; The Conservation of Historic Stone Monuments and Environmental Policy; Aspects of Economic Valuation of Cultural Heritage; Managing Stone Monuments; Air Pollution Standards for Architectural Conservation.