...organization: Provided, That nothing in this subchapter, or in any other statute of the United States, shall preclude an employer from making an agreement with...maintained, or assisted by any action defined in this subsection as an unfair labor practice) to require as a condition of employment membership therein...

...provides in pan: [Nlothing in this subchapter. or in any other statute of the United States, shall preclude an employer from making an agreement with...established, maintained, or assisted by any action defined in [section 8( a) of the Act] as an unfair labor practice) to require as a condition of employment membership...

...organization: Provided, That nothing in this Act, or in any other statute of the , United States, shall preclude an employer from making an agreement with...established, maintained, or assisted by any action defined in -(jury section 8 (a) of this Act as an unfair labor practice) to require as a condition of jD,jf. employment...

...labor organization" and from entering into an exclusive agreement with any organization (whether it was "established, maintained or assisted by any action defined in this Act as an unfair labor practice" or not) which was not the certified representative of the employees in a collective bargaining unit...

...the United States, shall preclude an employer from making an agreement with a labor organization ... to require as a condition of employment membership...such labor organization is the representative of the employees as provided in section 1 59(a) of the title . . ." The second proviso, incorporated in §8(a)(3)...

...organization: Provided. That nothing in this Act, or in any other statute of the United States, shall preclude an employer from making an agreement with...established, maintained, or assisted by any action defined in section 8(a) of this Act as an unfair labor practice) to require as a condition of employment membership...

...organization: Provided, That nothing in this Act, or in any other statute of the United States, shall preclude an employer from making an agreement with...labor organization (not established, maintained, or essisted by any action defined in section S(a) of this Act as an unfair labor practice) to require...

...or agreement approved or prescribed thereunder, or in any other statute of the United States, shall preclude an employer from making an agreement with...if such labor organization is the representative of employees as provided in Section 9 (a) in the appropriate collective bargaining unit covered by such...

...or agreement approved or prescribed thereunder, or in any other statute of the United States, shall preclude an employer from making an agreement with...such labor organization is the representative of the employees as provided in section 9 (a), in the appropriate collective bargaining unit covered by such...