D 8 definitions

D78

LU train type used in Southern Electric area on District line
Found on http://www.encyclo.co.uk/local/21542

---

D18

D18 is a cultivated variety of potato.
Found on http://www.probertencyclopaedia.com/browse/QD.HTM

---

D68

D68 is a cultivated variety of potato.
Found on http://www.probertencyclopaedia.com/browse/QD.HTM

---