 | Evaluating and scheduling white-pine weevil control in the Northeast | (1) |
 |
 | Evaluating and scheduling white-pine weevil control in the Northeast / by Robert Marty and D. Gordon Mott. Marty, Robert Jay, 1931- Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1964. | |
|