 | Martens, David G. cn | (2) |
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 | Martens, David G. cn; Hardwood? carpet? or tile? : A comparison of flooring costs under residential conditions / by David G. Martens. Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1971. | |
| Martens, David G. cn; How lumber price changes affect sawlog values / by David G. Martens. Upper Darby, Pa. : Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1967. | |
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