00449nam a2200181 a 4500001000800000005001700008008004100025019002100066035001700087035001200104040001800116100003900134245002300173260001900196300000900215650002600224984001700250253256919911203000000.0921012s1923 enk 000 0 eng d1 a9351213z9351213 9000009351213 91975628 aANLbengcANL1 aRitchie, Arthur David,d1891-1967.00aScientific method. aLondon,c1923. a1 v. 0aSciencexMethodology. aANLc120 RIT