Home › CFR › Title 43 › Part 181043 CFR Part 1810 — Introduction and General GuidanceSubpart 1810 — General Rules§ 1810.1— Rules of construction; words and phrases.§ 1810.2— Communications by mail; when mailing requirements are met.§ 1810.3— Effect of laches; authority to bind government.§ 1810.4— Information required by forms.Subpart 1812 — Qualifications of Practitioners§ 1812.1-1— Regulations governing practice before the Department.§ 1812.1-2— Inquiries.Subpart 1815 — Disaster Relief§ 1815.0-3— Authority.§ 1815.0-5— Definitions.§ 1815.1-1— Relief granted.§ 1815.1-2— Applications.