818
PUBLIC LAW 89-593-SEPT. 20, 1966
[80 STAT.
"(3) the volume data published in the most recent Cost Ascertainment Report does not reflect increases in the volume of fourthclass mail from changes in law, including changes which have not become effective, which in the opinion of the Postmaster General would have resulted in revenues of fourth-class mail (other than that for which rates are prescribed by sections 4422,4554 and 4651 to 4654 inclusive, of this title) not greater than the costs thereof by more than 4 per centum, or not less than the costs thereof by more than 4 per centum, had such changes in law been in effect for the period covered by such Cost Ascertainment Report. Certificates required by this subsection shall be based on the volume data published in the most recent Cost Ascertainment Report of the Department,". (b) The table of contents of such chapter 67 is amended by adding at the end thereof the following: "4556. "4557. "4558. "4559.
Postage rates on parcel post. Postage rates on catalogs. Reformation of conditions of mailability. Certification on fourth-class mail revenue-cost relationship.".
7rsut.^67r'
SEC. 2. (a) Section 4553 of title 39, United States Code, is amended by adding at the end thereof the following new subsections: "(c) The Postmaster General shall use units of area containing postal sectional center facilities as the basis of a postal zone as described in subsection (b) of this section. The zone shall be measured from the center of the unit of arek containing the dispatching sectional center facility. A post office of mailing and a post office of delivery shall have the same zone relationship as their respective sectional center facilities, but this sentence shall not cause two post offices to be regarded as within the same local zone. " (d) I n addition to the eight zones described in subsections (b) and (c) of this section, there is a local zone as defined by the Postmaster General from time to time. "(e) The foregoing provisions of this section are subject to section
Ante. p. 816.
4553 of t h i s title. ".
7 4 Stat. 66 5.
(b) Section 4303(d)(1) of title 39, United States Code, is amended by striking out "established for fourth class mail" and inserting in lieu thereof "described in section 4553, or prescribed pursuant to section 4558, of this title". (c) Section 4359(e)(3) of title 39, United States Code, is amended by striking out "established for fourth class mail" and inserting in lieu thereof "described in section 4553, or prescribed pursuant to section 4558, of this title". (d) Section 4554(a)(1) of title 39, United States Code, is amended to read as follows: "(1) complete books consisting wholly of reading matter or scholarly bibliography or reading matter with incidental blank spaces for notations and containing no advertising matter other than incidental announcements of books except additions, supplements, fillers, or similar matter which are mailed thereafter and which are intended to replace or add to material in the complete book originally mailed;". g^^ 3 gggtion 4552 of title 39, United States Code, is amended to read as follows: " (a) Except as provided in subsection (c), the minimum weight of fourth class mail is sixteen ounces, and the maximum weight is forty pounds in the first and second zones and in any other zones— "(1) twenty-five pounds on matter mailed on or after July 1, 1967, but before July 1, 1968; ,,, „ , _
76 Stat. 445.
74 Stat. 674.
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