Early 70s scifi novel about underground folks, caste is decided by the colour of your poncho, and everybody eats mouldy grainпрофессии stav stan profesija yrkeskår ผู้ชำนาญการ meslek grubu 某專業的人，同行 професія پيشہ کے لوگ những người trong nghề 某专业的人，同行إحْتِر