Section 21
SEC. 21. No formation secured by any Census form shall be divulged to any person other than an officer or employee of the Census acting in the discharge of his duty; nor shall it be published, except In the form of tabulations or summaries having no reference to individuals; and all such forms shall be destroyed when, in the judgment of the President of the Philippines, they have served their administrative purpose. No entry in any form, register or record made by a Census officer or by any other person in the discharge of his duty under this Act shall be admissible as evidence in any civil or criminal proceeding, except for the purposes of a prosecution instituted under the Act.