![indian standard for coarse and fine aggregates from natural sources for concrete IS 383-1970 1997 1993](https://civilengineer.co.in/wp-content/uploads/2015/02/indian-standard-for-coarse-and-fine-aggregates-from-natural-sources-for-concrete-IS-383-1970-1997-19931.jpg)
IS 269 – 1989 Ordinary Portland Cement 33 Grade
Indian Specification for Coarse and Fine Aggregates from Natural Sources for Concrete , Second Revision IS 383: 1970. The Civil Engineers ad related persons can easily download the IS Code from the www.civilengineer.co.in.