Von Loh, J. and D. Cogan. 2011 (in process). Vegetation Inventory Study Plan, Glen Canyon National Recreation Area, Arizona and Utah. Natural Resources Report NPS/CHDN/NRR-2010/xxx. Cogan Technology, Inc. Galena, IL.
Von Loh, J. and D. Cogan. 2010. Vegetation Classification List Update for Amistad National Recreation Area and Big Bend National Park/Rio Grande National Wild and Scenic River, Texas. In support of Natural Resources Reports NPS/CHDN/NRR-2010/211 and 212. Cogan Technology, Inc. Galena, IL.
D. Cogan and J. Von Loh 2010. Gradsect and Field Sampling Plan for Amistad National Recreation Area and Big Bend National Park/Rio Grande National Wild and Scenic River, Texas. In support of Natural Resources Reports NPS/CHDN/NRR-2010/211 and 212. Cogan Technology, Inc. Galena, IL.
Von Loh, J. and D. Cogan. 2010. Field Work Manual, Sampling Plan, and Supportive Data for Amistad National Recreation Area and Big Bend National Park/Rio Grande National Wild and Scenic River, Texas. In support of Natural Resources Reports NPS/CHDN/NRR-2010/211 and 212. Cogan Technology, Inc. Galena, IL.
Von Loh, J. and D. Cogan. 2010. Vegetation Inventory Study Plans, Amistad National Recreation Area and Big Bend National Park/Rio Grande National Wild and Scenic River, Texas. Natural Resources Report NPS/CHDN/NRR- 2010/211 and 212. Cogan Technology, Inc. Galena, IL.
Von Loh, J. and D. Cogan. 2010. Accuracy Assessment of the Vegetation Map Prepared for Fort Davis National Historic Site, Texas. Cogan Technology, Inc. Galena, IL.
Von Loh, J. and D. Cogan. 2010. Landform and Plant Community Summary for Kaloko-Honokohau National Historical Park, Pu’ukohola Heiau National Historic Site, and Pu’uhonua o Honaunau National Historical Park, Hawai’i. Cogan Technology, Inc. Galena, IL.
Cogan, D. and J. Von Loh. 2009. Vegetation inventory project report: John Day Fossil Beds National Monument, Oregon. Natural Resource Technical Report NPS/UCBN/NRTR-2009/XXX. National Park Service, Upper Columbia Basin Network, Moscow, Idaho. Cogan Technology, Inc. Galena, IL.
Von Loh, J. and D. Cogan. 2010. Vegetation Inventory Study Plans, Amistad National Recreation Area and Big Bend National Park/Rio Grande National Wild and Scenic River, Texas. Natural Resources Report NPS/CHDN/NRR- 2010/211 and 212. Cogan Technology, Inc. Galena, IL.
Cogan, D. and J. Von Loh. 2009. Vegetation inventory project report: Minidoka National Historic Site, Idaho. Natural Resource Technical Report NPS/UCBN/NRTR-2009/XXX. National Park Service, Upper Columbia Basin Network, Moscow, Idaho. Cogan Technology, Inc. Galena, IL.
Bell, J., D. Cogan, J. Erixson, and J. Von Loh. 2009. Vegetation inventory project report: Craters of the Moon National Monument and Preserve, Idaho. Natural Resource Technical Report NPS/UCBN/NRTR-2009/277. National Park Service, Fort Collins, Colorado. Cogan Technology, Inc. Galena, IL.
