GENERAL
The Library applies subject classification primarily to materials treated as monographs. Serial publications are separated by form and are assigned classification numbers within several broad categories.
The classification practices outlined below are current conventions. They are provided as explanation, stating NLM's general classification approach using the National Library of Medicine's and the Library of Congress's schedules, rather than 'how to classify' instructions.
BASIC RULESThe classification number assigned to a work is determined by the main focus or subject content of the work.
A work dealing with several subjects that fall into different areas of the classification is classed by emphasis, or if emphasis is lacking, by the first subject treated in the work. However, if the work is about a drug, special form of therapy, diagnostic procedure, or environmental condition as a cause of disease, etc., and the disease is only mentioned in the context of the primary subject (the therapy, etc.), classify as always for the primary subject.
A work on a particular disease is classified with the disease, which in turn is classified with the organ or region chiefly affected, regardless of special emphasis on form of therapy or diagnostic procedure used.
GENERALThe Library applies subject classification primarily to materials treated as monographs. Serial publications are separated by form and are assigned classification numbers within several broad categories.The classification practices outlined below are current conventions. They are provided as explanation, stating NLM's general classification approach using the National Library of Medicine's and the Library of Congress's schedules, rather than 'how to classify' instructions.BASIC RULESThe classification number assigned to a work is determined by the main focus or subject content of the work.A work dealing with several subjects that fall into different areas of the classification is classed by emphasis, or if emphasis is lacking, by the first subject treated in the work. However, if the work is about a drug, special form of therapy, diagnostic procedure, or environmental condition as a cause of disease, etc., and the disease is only mentioned in the context of the primary subject (the therapy, etc.), classify as always for the primary subject.A work on a particular disease is classified with the disease, which in turn is classified with the organ or region chiefly affected, regardless of special emphasis on form of therapy or diagnostic procedure used.
การแปล กรุณารอสักครู่..