A collection of featured documents from our library that are popular among our users or otherwise noteworthy.
Universal Decimal Classification. English full edition -- Ethnology. Ethnography
Universal Decimal Classification. English full edition -- Mathematics
Universal Decimal Classification. English full edition -- Astronomy. Astrophysics. Space research. Geodesy
Universal Decimal Classification. English full edition -- Physics
Universal Decimal Classification. English full edition -- Chemistry. Crystallography. Mineralogy
Universal Decimal Classification. English full edition -- Earth sciences. Geology. Geophysics
Universal Decimal Classification. English full edition -- Exact sciences in general. Nature study. Conservation. Environmental sciences
Universal Decimal Classification. English full edition -- Palaeontology
Universal Decimal Classification. English full edition -- Biological sciences in general. Virology. Microbiology
Universal Decimal Classification. English full edition -- Botany
Universal Decimal Classification. English full edition -- Zoology
Universal Decimal Classification. English full edition -- Physiology
Universal Decimal Classification. English full edition -- Hygiene generally. Personal health and hygiene
Universal Decimal Classification. English full edition -- Public health. Accident prevention
Universal Decimal Classification. English full edition -- Pharmaceutics. Therapeutics. Toxicology
Universal Decimal Classification. English full edition -- Pathology
Universal Decimal Classification. English full edition -- Orthopaedics. Surgery. Ophthalmology
Universal Decimal Classification. English full edition -- Gynaecology. Obstetrics
Universal Decimal Classification. English full edition -- Veterinary science
Universal Decimal Classification. English full edition -- Materials testing. Commercial materials. Power stations. Economics of energy
Universal Decimal Classification. English full edition -- Heat engines in general. Steam power. Steam engines. Boilers. Water power. Hydraulic energy
Universal Decimal Classification. English full edition -- Electrical engineering
Universal Decimal Classification. English full edition -- Heat engines (other than steam engines)
Universal Decimal Classification. English full edition -- Pneumatic energy, machinery and tools. Refrigeration and liquefaction techniques and plant
Universal Decimal Classification. English full edition -- Fluids handling, storage and distribution plant and equipment