DCHP-1 Online
Home
Browse Entries
Project History
Project Team
How to Use
Abbreviations
Frontmatter (1967)
Word of the Day
Copyright Notice
sec
Hist.
n.
See
parchment beaver
1957 quote.
See also:
castor sec
parchment beaver
1964
 
The hat formula, however, was rigid--it had to be three Gras to one Sec.