[pct-l] filters ? who needs 'em !!!

[verber at gmail.com (Mark Verber)]

>        Here's an interesting paper on the topic.  It focuses on
> giardiasis, but also discusses other intestinal parasites:
> 
> http://www.ridgenet.net/~rockwell/Giardia.pdf

Just keep in mind that the data from the sierras is from 1984.  A
question to ask is if giardiasis and other friends is the same, more,
or less common in the sierras today.  I don't know the answer to this.
 I think it would be facinating to study the same lakes today than
were surveyed in 1984.

--mark