Effects of Prescribed Burning on Soil Microorganisms in a Minnesota Jack Pine Forest von Ahlgren, Isabel F., Ahlgren, Clifford E.

Volltext

Some effects of different forest litters on seed germination and growth von Ahlgren, Clifford E, Ahlgren, Isabel F

Volltext

Small Mammals and Vegetation Changes After Fire in a Mixed Conifer-Hardwood Forest von Krefting, Laurits W., Ahlgren, Clifford E.

Volltext

Some Effects of Fire on Reproduction and Growth of Vegetation in Northeastern Minnesota von Ahlgren, Clifford E.

Volltext

Phenological Observations of Nineteen Native Tree Species in Northeastern Minnesota von Ahlgren, Clifford E.

Volltext

Phenological observations of nineteen native tree species von Ahlgren, Clifford E

Volltext

Early Forest Conditions in the Alaska Interior: an Historical Account with Original Sources. and Sitka Spruce Planted in 1805 on Unalaska Island by the Russians. By H. J. Lutz, (Ju... von Ahlgren, Clifford E.

Volltext

Early Forest Conditions in the Alaska Interior: An Historical Account with Original Sources von Ahlgren, Clifford E.

Volltext

Early Forest Conditions in the Alaska Interior: an Historical Account with Original Sources. and Sitka Spruce Planted in 1805 on Unalaska Island by the Russians von Ahlgren, Clifford E.

Volltext

Society Business von Dix, Ralph, Frank, Peter, Lloyd, Monte, Martin, Paul, Stearns, Forest, Pomeroy, Larry, Dreyer, William A., Inger, Robert F., Ahlgren, Clifford E., Andresen, John W., Bliss, Lawrence C., Burgess, Robert L., Coupland, Robert T., De Selm, Henry R., Getz, Lowell L., Gilbert, Margaret L., Forman, Richard T. T., Hamilton, Ernest S., Hulbert, Lloyd C., Lowe, Charles H., Maycock, Paul F., Ohmann, Lewis F., Patton, E. Gibbes, Patten, Duncan T., Ware, George H., Angelovic, Joseph W., Kline, Jerry R., Mason, Benjamin J., Nelson, Dan J., Woodwell, George M., Sprugel, George, Boughey, Arthur S., Niering, William A.

Volltext