Highway Signs
editCalifornia State Route Shield in 1957.
This is the normal highway
editThis is the hidden interstate highways.[1]
- New shields in the future.
- Sunshine highway in Florida.
Reference section
edit- ^ Smith, R. J.; Bryant, R. G. (1975-10-27). "Metal substitutions incarbonic anhydrase: a halide ion probe study". Biochemical and Biophysical Research Communications. 66 (4): 1281–1286. doi:10.1016/0006-291x(75)90498-2. ISSN 0006-291X. PMID 3.
External links section
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