The PDF file you selected should load here if your Web browser has a PDF reader plug-in installed (for example, a recent version of Adobe Acrobat Reader).

If you would like more information about how to print, save, and work with PDFs, Highwire Press provides a helpful Frequently Asked Questions about PDFs.

Alternatively, you can download the PDF file directly to your computer, from where it can be opened using a PDF reader. To download the PDF, click the Download link above.

Fullscreen Fullscreen Off


Professor Devendra Lal, was a distinguished geophysicist and earlier Director of the Physical Research Laboratory. His work spanned diverse areas of the Earth and Space Sciences. He is best known for his role in founding and developing the field in which cosmic rays produced isotopes on Earth are used as tracers to investigate a wide range of Earth science problems.
User
Notifications
Font Size