Dec. is the abbreviation of December.
Ave.
correct
There are no "correct" abbreviations for birds. The first syllable usually works: car.
DCDR and VCDR
M. et Mme. Dupont
A Ph.D. abbreviation can only be used in conjunction with a proper name. This is an example of a correct rule when using abbreviations.
When writers correct, they may be editing for correct grammar, punctuation, spelling, and sentence structure. This includes ensuring proper capitalization of words, consistent use of numbers, correcting any abbreviations to ensure they are appropriate and clearly understood within the context.
It would be correct to say "On the 13th December 2010"
the correct grammar for month abbreviations is: capitalization of the first letter then using the 2nd, 3rd and occasionally the 4th letters followed by a period. e. g. Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sept. Oct. Nov. Dec..
The abbreviations are PL.
Streets can be abbreviated using abbreviations such as St. for Street, Ave. for Avenue, Blvd. for Boulevard, Rd. for Road, etc. Make sure to follow local conventions and check with official sources for the correct abbreviations.