visions that become obsolete before the revision date stated on the cover ch volume are not carried. Code users may find the text of provisions in on a given date in the past by using the appropriate numerical list of ms affected. For the period before January 1, 1973, consult either the List R Sections Affected, 1949-1963, or 1964-1972, published in three separate es. For the period beginning January 1, 1973, a "List of CFR Sections ted" is published at the end of each CFR volume.

RPORATION BY REFERENCE

at is incorporation by reference? Incorporation by reference was estabby statute and allows Federal agencies to meet the requirement to pubegulations in the Federal Register by referring to materials already pubelsewhere. For an incorporation to be valid, the Director of the Federal ter must approve it. The legal effect of incorporation by reference is that aterial is treated as if it were published in full in the Federal Register (5 . 552(a)). This material, like any other properly issued regulation, has the of law.

at is a proper incorporation by reference? The Director of the Federal ter will approve an incorporation by reference only when the requirements FR Part 51 are met. Some of the elements on which approval is based are: The incorporation will substantially reduce the volume of material pubin the Federal Register.

The matter incorporated is in fact available to the extent necessary to à fairness and uniformity in the administrative process.

The incorporating document is drafted and submitted for publication in dance with 1 CFR 51.4.

perly approved incorporations by reference in this volume are listed in the ng Aids at the end of this volume.

at if the material incorporated by reference cannot be found? If you have roblem locating or obtaining a copy of material listed in the Finding Aids s volume as an approved incorporation by reference, please contact the y that issued the regulation containing that incorporation. If, after cong the agency, you find the material is not available, please notify the tor of the Federal Register, National Archives and Records Service, Washn DC 20408, or call (202) 523-4534.

INDEXES AND TABULAR GUIDES

ubject index to the Code of Federal Regulations is contained in a separate e, revised semiannually as of January 1 and July 1, entitled CFR INDEX 'INDING AIDS. This volume contains the Parallel Table of Statutory Auies and Agency Rules (Table I), and Acts Requiring Publication in the al Register (Table III). A list of CFR Titles, Chapters, and Parts and an betical list of agencies publishing in the CFR are also included in this

e.

index to the text of Presidential documents appears at the end of each lation of Title 3, The President.

Federal Register Index is issued monthly in cumulative form. This index ed on a consolidation of the "Contents" entries in the daily Federal Regis

ist of CFR Sections Affected (LSA) is published monthly, keyed to the n dates of the 50 CFR titles.

mary, legal interpretation, or other explanation of any regulation in , contact the issuing agency. Inquiries concerning editing procedures ce assistance with respect to the Code of Federal Regulations may be o the Director, Office of the Federal Register, National Archives and rvice, General Services Administration, Washington, D.C. 20408 (tele-523-3517). Sales are handled exclusively by the Superintendent of s, Government Printing Office, Washington, D.C. 20402.

JOHN E. BYRNE,

Director,

Office of the Federal Register.

■, 1981.

List of CFR
Sections

Affected

(1964 through 1972)

A Research Guide

ORM

is $

These two volumes contain a
compilation of the "List of CFR

Sections Affected (LSA)" for the years
1964 through 1972. Reference to these
tables will enable the user to find the
precise text of CFR provisions which
were in force and effect on any given
date during the period covered.

Volume I (Titles 1 through 27) $14.00
Volume II (Titles 28 through 50) $13.00

Mail to: Superintendent of Documents, U.S. Govemment Printing Office, Washington, D.C. 20402

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THIS TITLE

-HOUSING AND URBAN DEVELOPMENT is composed of five volumes. volumes containing Parts 0-199, Parts 200-499, Parts 500-799, Parts and Part 1700 to end represent all those current regulations of the nt of Housing and Urban Development issued under this title of the f April 1, 1981.

is volume, Beverly Mazloom was Chief Editor, assisted by Gertrude E. The Code of Federal Regulations publication program is under the diof Martha B. Girard, assisted by Robert E. Jordan.