¶ Umbrella
← Umbilical Cord (2) | Umbrella (1) →
RBF Definitions
“An umbrella is a mobile environment-controlling artifact.”
¶ Citations
- RBF to Ron Goodfellow, Philadelphia, PA: 29 Jul’76
← Umbilical Cord (2) | Umbrella (1) →
RBF Definitions
“An umbrella is a mobile environment-controlling artifact.”