Section 18
SEC. 18. If, in the judgment of the President of the Philippines, it shall appear practicable and desirable to collect in addition to any prescribed facts and statistics relation to the population as individuals, further information relating to general statistics including corporate bodies partnerships, associations, groups of persons having joint or common interest, social and economic institutions industrial and commercial enterprises, and agricultural and other forms of property of whatsoever class, kind or character, he may direct that such information shall be collected and it shall be obligatory on all proprietors, officers, partners, associates, directors, administrators, managers and legal representatives of such corporations, partnerships, associations, groups of persons, institutions, enterprises, and properties, to furnish such information in the manner and within the time which may be prescribed by regulation. The collection of the information may be secured by mailing or delivering the necessary forms and explanatory matter to the persons best qualified to furnish it, in which cases such proprietors, officers, partners, associates, directors, administrators, managers or legal representatives shall be required to complete the schedules or forms themselves or cause them to be completed, on their own responsibility, by their delegates, as provided in the next preceding section. The persons required to complete such schedules may also be required mail or deliver them on completion, and within such time as may be prescribed to a designated Census officer.