00518nam a2200169Ia 450000500170000000800410001703500090005804100080006708200110007510000230008624500360010925000080014526000320015330000080018550501080019365000470030120260808125316.0260808s9999||||xx |||||||||||||| ||und||  a1547  aENG  a50.001  aBeveridge, W. I. B 0aArt of scientific investigation  a1st  aLondonbMercury Booksc1961  a178  aScientific investigation, Research methods, Experimental design, Scientific creativity, Research skills  aManagementbGeneral works -- Encyclopedias