Analisis Pengendalian Kualitas Produk Karet Ekspor Ribbed Smoked Sheet (Rss) (Studi Kasus Di Pabrik Pengolahan Ribbed Smoked Sheet – Rss Kebun Cikumpay, Ptpn Viii – Persero Purwakarta, Jawa Barat - Ahmad, AbidZahid (2015)