Sinclair GSH-60ERA, GSH-100ERA, GSH-80ERA, GSH-100IRA, GSH-120IRA Operational Manual
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Sinclair GSH-60ERA, GSH-100ERA, GSH-80ERA, GSH-100IRA, GSH-120IRA, GSH-120ERA, GSH-140IRA, GSH-80IRA, GSH-140ERA, GSH-160IRA, GSH-160ERA, GSH-120IRA-3, GSH-120ERA-3, GSH-140IRA-3, GSH-140ERA-3, GSH-160IRA-3, GSH-160ERA-3 Operational Manual