The Standard Industrial Classification (SIC) system became the North American Industry Classification System

The SIC was the Standard Industrial Classification

The ISIC is the International Standard Industrial Classification

Yes, SIC does stand for the Standard Industrial Classification Code which was first created by the U.S. government in 1937, but has since been replaced by the North American Industry Classification System (NAICS).

Harold Tobias Goldstein has written:

'The International standard industrial classification and the U. S. standard industrial classification' -- subject(s): Industries, Classification, Industrial statistics

'Historical comparability of census of manufactures industries, 1929-1958' -- subject(s): Manufacturing industries