T. Gullberg

Time consumption model for off-road extraction of shortwood

T. Gullberg, 1997 .

The long bundler - development and testing of a machine for bundling of small trees

T. Gullberg, H. O. Saell, B. Berglund, 1991 .

Evaluating Operator-Machine Interactions in Comparative Time Studies

T. Gullberg, T. Gullberg, 1995 .

Studies of the tractor Ford Versatile 276 with the harvesting head Tufab GS 302

J. Johansson, T. Gullberg, 1992 .

MB-trac fuel-chips method. Follow-up and time study.

T. Gullberg, 1989 .