I didn't need Abramowitz and Stegun until grad school. In the 1990s. It was a well-known reference book for people at that level, not a text book. For my under

I didn't need Abramowitz and Stegun until grad school. In the 1990s. It was a well-known reference book for people at that level, not a text book. For my undergrad the CRC math handbook was enough.