архитектурные конструкции

This little book is big on answers Whether you're an apprentice in the piping trades or a seasoned tradesperson, you'll find this completely revised and updated guide has answers to the questions you'll encounter on the job. Get current, concise facts on * Metrics and conversions * Tungsten inert gas welding and arc welding * Steam heating, hot water, refrigeration, and air conditioning systems * Grooved end/plain end piping systems * Process piping using plastics * Automatic fire protection systems * Terms, BTU fuel values, abbreviations, angle calculations, and more 

современная русская литература

смертельная опасность

Charles N. McConnell