http://www.fileformat.info/info/unicode/char/2202/...

might help...

According to this, the Windows alt+code for the partial derivative character is "inaccessible" -->>

http://www.planetquark.com/images/library/tips/Spe...

See https://en.wikipedia.org/wiki/%E2%88%82

It is right there as the HTML code. Alt+ 8706