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![An Introduction To Gravity Modification: A Guide To Using Laithwaite's And Podkletnov's Experiments And The Physics Of Forces For Empirical Results, [Paperback]](/itemImage/2/7/8/9/2_5562387.jpg "An Introduction To Gravity Modification: A Guide To Using Laithwaite's And Podkletnov's Experiments And The Physics Of Forces For Empirical Results, [Paperback]")