If you google it here is what comes up:
'
TGCA
Taiwan General Contractors Association
1
TGCA
Taiwan Guidance and Counseling Association
1
TGCA
Texas Girls Coaches Association
Texas, Coaching, Girl
1
TGCA
Texas Grocery & Convenience Association
1
TGCA
Texas Grocery and Convenience Association
1
TGCA
Texas Gun Collectors Association
Collector, Gun, Texas
1
TGCA
The Genome Customization Award
1
TGCA
Traditional Gypsy Cob Association
Gypsy, Horse, Stallion
1
TGCA
Transportable Group Control Approach
1
TGCA
Triple Grand Champion Alter'
I'm sure there are more.
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