How many works about Romeo and Juliet appeared before Shakespeare’s version?

Romeo and Juliet appeared in seven editions before 1642. First quarto, 1597. A 'bad' quarto, based on a text reconstructed from memory by a group who knew the play on stage. The text may have been one cut and adapted for performance.

it would have to be gasioline

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.