[
 {
  "id": "steiner-ga291-de",
  "type": "book",
  "author": [
   {
    "family": "Steiner",
    "given": "Rudolf"
   }
  ],
  "title": "Das Wesen der Farben",
  "publisher": "Rudolf Steiner Verlag",
  "publisher-place": "Basel",
  "ISBN": "978-3-7274-6510-9",
  "edition": "4",
  "collection-title": "Rudolf Steiner Gesamtausgabe",
  "collection-number": "291",
  "number-of-pages": "256",
  "issued": {
   "date-parts": [
    [
     1991
    ]
   ]
  },
  "language": "de"
 },
 {
  "id": "steiner-ga291-en-rspc1935",
  "type": "book",
  "author": [
   {
    "family": "Steiner",
    "given": "Rudolf"
   }
  ],
  "title": "Colour",
  "translator": [
   {
    "literal": "Harry Collison"
   }
  ],
  "publisher": "Rudolf Steiner Publishing Co.",
  "note": "GA 291; edition code RSPC1935",
  "issued": {
   "date-parts": [
    [
     1935
    ]
   ]
  },
  "language": "en"
 },
 {
  "id": "anthroposophyai-ga291",
  "type": "webpage",
  "author": [
   {
    "family": "Steiner",
    "given": "Rudolf"
   }
  ],
  "title": "Das Wesen der Farben (GA 291), as served by anthroposophy.ai",
  "URL": "https://anthroposophy.ai/contents/291/",
  "note": "Rudolf Steiner, Das Wesen der Farben (GA 291), as served by anthroposophy.ai, https://anthroposophy.ai/ga/291/, register entry https://anthroposophy.ai/contents/291/, status as of 2026-10-21: German served; English editions RSPC1935.",
  "accessed": {
   "date-parts": [
    [
     2026,
     10,
     21
    ]
   ]
  }
 }
]