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Geothermal Loop Driller IllustratedThe book, plus Bonus 1: Loop Driller Practice Questions (exam-style, with answers explained) and Bonus 2: Common Loop Install Mistakes + Quick-Reference Cards free.US$ 27
Bonus 1: Loop Driller Practice Questions (exam-style, with answers explained)FREE
Bonus 2: Common Loop Install Mistakes + Quick-Reference CardsFREE

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Order summary ˅US$ 27
Geothermal Loop Driller Illustrated
US$ 63US$ 27
Bonus 1: Loop Driller Practice Questions (exam-style, with answers explained)Bonus
Included
Bonus 2: Common Loop Install Mistakes + Quick-Reference CardsBonus
Included
TotalUS$ 27