Extending through June 30, 1957, the duration of the Poliomyelitis Vaccination Assistance Act of 1955.

MLA

United States. Extending through June 30, 1957, the duration of the Poliomyelitis Vaccination Assistance Act of 1955. Washington : [publisher not identified], 1956.

APA

United States. (1956). Extending through June 30, 1957, the duration of the Poliomyelitis Vaccination Assistance Act of 1955. Washington : [publisher not identified].

Chicago

United States. Extending through June 30, 1957, the duration of the Poliomyelitis Vaccination Assistance Act of 1955. Washington : [publisher not identified], 1956.