Here I present: J. Reznick & K. Koyles, “United States National Library of Medicine”, 2017, PART TWO (2).
INTRODUCTION.
The Library of Congress (LOC) and National Library of Medicine (NLM) are two (2) different libraries of the United States government in Washington DC (district/suburban). The National Library of Medicine (NLM) classification system is derived from the Library of Congress (LOC) call numbers.
The system is alphabetically arranged, however the NLM focus is on Q (science) & W (health). The classification system is given BELOW.
