EXHIBIT D-COMPUTATION OF POSTAGE BASED ON MAILINGS OF ONE ISSUE OF A QUALIFYING CLASSROOM PUBLICATION ISSUED WEEKLY POST OFFICE DEPARTMENT STATEMENT SHOWING NUMBER OF COPIES OF SECOND-CLASS OR CONTROLLED CIRCULATION PUBLICATION MAILED Mayville 2. STATE AND ZIP CODE Maryland 21104 3. DATE July 1, 1967 13. When postage is computed at the key rate, the lines for Zones 1 to 8 need not be completed except for one issue each calendar year at 12-month intervals. The total zone mailings must be entered in item 14 during the 12-month intervals. |