Nitrate

From: Karen Pavelka <*pavelka*> Date: Monday, July 30, 1990 · pavelka

...
What I still don't know is the specific levels of NO and NO2 which are a
threat to the collection.  The health department is sending some
information about health hazards related to NO & NO2.

karen.

                                  ***
                  Conservation DistList Instance 4:15
               Distributed: Saturday, September 22, 1990
                        Message Id: cdl-4-15-007
                                  ***