name of dataset: rdtelec
no of variables: 6
no of observations: 29

+----------+--------------------------+
| variable | label                    |
+----------+--------------------------+
| rd       | R&D spending, millions $ |
| sales    | firm sales, millions $   |
| rdintens | rd as percent of sales   |
| lrd      | log(rd)                  |
| lsales   | log(sales)               |
| salessq  | sales^2                  |
+----------+--------------------------+

See RDCHEM.RAW