On Agriculture (1912) - Page 24

Pol. readings of the Marcian codex noted by Angelo Politian in the editio princeps
V readings of the editio princeps not corrected by Politian
v readings of the same edition corrected by Politian
Besides these readings, the testimonies of Victorius have been diligently added.

The following transcripts of the oldest books are added:

Parisian Codex 6884 A, 12th/13th century
Laurentian Codex 51, 4, 15th century
Laurentian Codex (= m) 30, 10, 14th century
Laurentian Codex 51, 1, 14th/15th century (which is called the Florentine in the apparatus)