Pocket gophers and meadow voles
These are some useful links to controlling pocket gophers:
PNW 627, Meadow Voles and Pocket Gophers: Management in Lawns, Gardens, and Cropland
OSU Extension Service: Controlling pocket gopher damage to conifer seedlings.
UC IPM Pest Notes: Pocket Gopher management guidelines
Chip Bubl, 2009. Controlling Rodents. Digger
Spanish language Resource:
UC IPM Pest Guidelines: Laz tuzas