<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31452038</termId><termName>8-track cartridges</termName><termType>PT</termType><termNote><![CDATA[ Cartridge-based 1/4-inch analog audiotape format. The 8-track cartridge is a magnetic tape-based recorded sound format that was used exclusively for commercial releases. The tape is composed of magnetic particles or pigment, binder, and a polyester base. It was a popular format from the mid-1960s through the early 1980s. ]]></termNote><termCreatedDate>2026-03-30 20:59:46</termCreatedDate><relation><relationType>UF</relationType><termId>31452039</termId><termName>8-track</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31452040</termId><termName>8-track cartridge</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31452041</termId><termName>8-track tapes</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31482825</termId><termName>eight-track tape</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31482826</termId><termName>eight-track tapes</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31452042</termId><termName>stereo-8</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31430246</termId><termName>audiotapes</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31445749</termId><termName>eight-track players</termName><termType>PT</termType></relation></term>  </Zthes>