Study of the principles and practices of library administration and services.

The study of natural phenomena by observation, measurement, and experimentation.

A large collection of DNA fragments cloned (CLONING, MOLECULAR) from a given organism, tissue, organ, or cell type. It may contain complete genomic sequences (GENOMIC LIBRARY) or complementary DNA sequences, the latter being formed from messenger RNA and lacking intron sequences.

'Medical Libraries' are repositories or digital platforms that accumulate, organize, and provide access to a wide range of biomedical information resources including but not limited to books, journals, electronic databases, multimedia materials, and other evidence-based health data for the purpose of supporting and advancing clinical practice, education, research, and administration in healthcare.

Collections of systematically acquired and organized information resources, and usually providing assistance to users. (ERIC Thesaurus, http://www.eric.ed.gov/ accessed 2/1/2008)