 choos physiolog journal for year administr librari collect sought object criteria assembl well-round period collect subject field repres collect the nearest approach criterion priori knowledg specialist suggest gross gross 1927 thi method consist essenti count bibliograph citat conclus articl basic period field consider arrang journal cite order frequenc citat thu field chemistri refer journal american chemic societi count list frequent cite journal accord gross gross journal cite frequent journal american chemic societi valuabl journal librari purchas order possess well-round collect chemistri although gross gross method twenti year fundament assumpt method base examin these assumpt 1 the period profession worker direct proport number time cite profession literatur 2 the journal journal base tabul repres entir field 3 if journal base weight equal 