Product standard.

no.66-1 1966; no.O 1967; no.0-67 1967; no.67-8 1967; no.68-9 1968; no.69-10 1969; no.69-11 1969; no.69-12 1969; no.69-13 1969; no.69-14 1969; no.69-15 1969; no.69-16 1969; no.69-17 1969; no.69-18 1969; no.69-19 1969; no.70-0 1970; no.70-20 1970; no.70-21 1970; no.70-22 1970; no.70-23 1970; no.70-24 1970; no.70-26 1970; no.70-27 1970; no.70-28 1970; no.70-29 1970; no.70-30 1970; no.70-32,REV1-2 1970; no.70-33 1970; no.70-34 1970; no.70-35 1970; no.70-36 1970; no.70-37 1970; no.70-38 1970; no.70-39 1970; no.70-40 1970; no.70-41 1970; no.70-42 1970; no.0-51 incompl. 1971; no.71-43 1971; no.71-44 1971; no.71-45 1971; no.71-46 1971; no.71-47 1971; no.71-48 1971; no.71-49 1971; no.71-50 1971; no.71-51 1971; no.71-52 1971; no.72-53 1972; no.72-54 1972; no.72-55 1972; no.73-56 1973; no.73-57 1973; no.73-58 1973; no.73-59 1973; no.73-60 1973; no.74-1 1974; no.74-61 1974; no.74-62 1974; no.75-63 1975; no.75-64 1975; no.75-65 1975; no.75-66 1975; no.76-67 1976; no.76-68 1976; no.76-69 1976; no.76-70 1976; no.76-71 1976; no.76-72 1976; no.77-73 1977