Is it right to put an indefinite article before a phrase with a noun modified by a genitive which includes a plural noun?
e.g. We had a two weeks' holiday in Greece.
There was a thirty minutes' lesson yesterday.
Should the lack of the indefinite articles in the above sentences be considered as a grammar mistake?
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
Can't we use an indefinite article referring it to the head-noun modified by a plural noun in the genitive case considering the latter as a descriptive attribute? So, what's wrong with the following word combinations:
a soldiers' canteen, a girls' school, a three miles' walk, a fifteen minutes' break, etc. ?