المؤلفون: Stone, Robert N., Vasilevsky, Alexander.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_133464?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Stone, Robert N., DeBald, Paul S.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_133824?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Vasilevsky, Alexander., Stone, Robert N.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_133862?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Chase, Clarence D., Lake States Forest Experiment Station (Saint Paul, Minn.), Stone, Robert N.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_153115?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Stone, Robert N., Lake States Forest Experiment Station (Saint Paul, Minn.), Thorne, Harry W.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_271062?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Thorne, Harry W., Lake States Forest Experiment Station (Saint Paul, Minn.), Stone, Robert N.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_271085?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Thorne, Harry W., Lake States Forest Experiment Station (Saint Paul, Minn.), Wisconsin. Conservation Department., Stone, Robert N.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_154131?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Bagley, Walter Thaine, 1917-, Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.), Stone, Robert N.

الوصول الحر: https://www.europeana.eu/item/08711/https___www_biodiversitylibrary_org_item_159226?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Chase, Clarence D.,, Lake States Forest Experiment Station (Saint Paul, Minn.), Stone, Robert N.

الوصول الحر: https://www.europeana.eu/item/08711/bibliography_80429?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCaTest

المؤلفون: Stone, Robert N.

المساهمون: Bagley, Walter Thaine, 1917-, Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)

الإتاحة: https://www.biodiversitylibrary.org/item/159226Test