![GAS TRADE TRAINING UNIT 16, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 16, 6th Edition (2019)
Domestic gas-fired refrigerators. epub version 1.1
![GAS TRADE TRAINING UNIT 17, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 17, 6th Edition (2019)
Conversion burners. epub version 1.1
![GAS TRADE TRAINING UNIT 18, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 18, 6th Edition (2019)
Water heaters and combination systems. epub version 1.1
![GAS TRADE TRAINING UNIT 19, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 19, 6th Edition (2019)
Forced warm-air heating systems. epub version 1.1
![GAS TRADE TRAINING UNIT 20, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 20, 6th Edition (2019)
Hydronic heating systems. epub version 1.1
![GAS TRADE TRAINING UNIT 21, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 21, 6th Edition (2019)
Space heaters and fireplaces. epub version 1.1
![GAS TRADE TRAINING UNIT 23, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 23, 6th Edition (2019)
Forced-air add-on devices. epub version 1.1
![GAS TRADE TRAINING UNIT 27A, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 27A, 6th Edition (2019)
Commercial/Industrial appliances over 400 000 Btu/h (120 kW). epub version 1.1
![GAS TRADE TRAINING UNIT 27B, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 27B, 6th Edition (2019)
Commercial cooking equipment. epub version 1.1
![GAS TRADE TRAINING UNIT 28, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 28, 6th Edition (2019)
Gas-fired air conditioning. epub version 1.1
![GAS TRADE TRAINING UNIT 29, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 29, 6th Edition (2019)
Advanced electricity for gas-fired equipment. epub version 1.1
![GAS TRADE TRAINING UNIT 30, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 30, 6th Edition (2019)
Controls: Purpose and operation. epub version 1.1
![GAS TRADE TRAINING UNIT 31, 6th Edition (2019)](http://epubs.csa.ca/Guide/Covers/frontcover_learning_9489.jpg)
GAS TRADE TRAINING UNIT 31, 6th Edition (2019)
Valve trains and burners. epub version 1.1
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CSA C22.1:21 - Canadian Electrical Code, Part 1
The 25th edition of the CSA C22.1:21, Canadian Electrical Code, Part I. ePub version 1.0
![C22.1:21 HB PACKAGE](http://epubs.csa.ca/Guide/Covers/c22.1-21-thumbnail.jpg)
C22.1:21 HB PACKAGE
The Canadian Electrical Code Interactive Standard combines The Canadian Electrical Code, Part I and the Canadian Electrical Code Handbook (CSA C22.1:21 and C22.1HB:21) into a powerful ebook format with enhanced navigation and markup capabilities. It’s the most comprehensive, easy-to-use set of CE Code tools we’ve ever offered! ePub version 1.0