2024 42 USC 17195a – Geothermal heat pumps and direct use research and development

2023 42 USC 17195a – Geothermal heat pumps and direct use research and development

2022 42 USC 17195a – Geothermal heat pumps and direct use research and development

2021 42 USC 17195a – Geothermal heat pumps and direct use research and development