Front matter [123 kb, 10 pages]: title page, abstract, acknowledgments, table of contents
Chapter 1 [6.5 Mb, 51 pages]: Neutrino Physics
Chapter 2 [6.9 Mb, 51 pages]: Borexino Experiment
Chapter 3 [941 kb, 28 pages]: Internal and External Radioactive Backgrounds
Chapter 4 [22 Mb, 57 pages]: Scintillator Purification
Chapter 5 [4.1 Mb, 47 pages]: Surface Contamination
Chapter 6 [4.0 Mb, 21 pages]: Scintillator Flow Modeling
End matter [155 kb, 12 pages]: bibliography