Preface.- Biological agents and bioterrorism; M. Bologna.- Immunological Defence Mechanisms against Biological Agents; M. Bologna.- Mass spectrometry and tandem mass spectrometry: an overview; G. Giorgi.- Modern Sample Preparation Techniques for Gas Chromatography-Mass Spectrometry. Analysis of Environmental Markers of Chemical Warfare Agents Use; O. Terzic, P. de Voogt.- An Overview of Matrix-Assisted Laser Desorption/Ionization (MALDI) mass spectrometry and some of its applications; M.W. Duncan et al.- Field portable mass spectrometry; S.A. Lammert.- MALDI Imaging Mass Spectrometry; E.H. Seeley and R.M. Caprioli.- Bacterial Identification by Mass Spectrometry; C.R. Cox, K.J. Voorhees.- Analysis of bio-nanoparticles by means of nano ES in combination with DMA and PDMA - intact viruses, virus-like-particles and vaccine particles; G. Allmaier et al.- Mass spectrometric target analysis and proteomics in environmental toxicology; K. J. Groha, M.J.-F. Suter.- Proteomics for the enhanced discovery of bacterial biomarkers; E.M. Hartmann, J. Armengaud.- Laser-based detection of explosives and related compounds; I. Malka et al.-Detection of Metals and Radionuclides using Rapid, On-site, Antibody-based Assays; D.A. Blake, B.Ban.- Identification of Fraudulently Modified Foods; G. Sindona.- Tandem mass spectrometric analysis of novel antineoplastic curcumin analogues; H. Awad et al.- Glycoconjugate vaccines used for prevention from biological agents: Tandem mass spectrometric analysis; F. Jahouh et al.- Nano-structured solids and heterogeneous catalysts for the selective decontamination of chemical warfare agents; M. Guidotti and C. Evangelisti.- Strategic Missile Forces in Ukraine: Brief Survey of Past and Present Environmental Problems; I. Winkler.