Whenever any provision of law provides for a form to be supplied, furnished, or provided by a county assessor, the requirement means that the county assessor shall make the form available to a taxpayer at the office of the county assessor. In such cases there is no requirement that the county assessor mail the form to the taxpayer unless the statute specifically provides for such mailing. Where a taxpayer requests the assessor to mail the form to the taxpayer, or when the assessor voluntarily mails the form, the assessor does not undertake the responsibility for actual receipt by the taxpayer of the form, and no estoppel applies against the assessor if the taxpayer does not receive the form. [1973 c.402 § 15]