Hey every body i need these books For my project of end of study:

API 11L : RECOMMENDED PRACTICE FOR DESIGN CALCULATIONS FOR SUCKER ROD PUMPING SYSTEMS (CONVENTIONAL UNITS)

API 11L2 : CATALOG OF ANALOG COMPUTER DYNAMOMETER CARDS

API 11L3 : SUCKER ROD PUMPING SYSTEM DESIGN BOOK

API 11L4 : CURVES FOR SELECTING BEAM PUMPING UNITS



(Thanks a lot)

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