[068 DECIMAL CLASSIFICATION 
Oxyhemoglobin physiol. , Oysters 
Oxyntic glands, stomach fresh pub. helth 614.317 
Oxytocics therapeutics preservation chem. tech.664.9 
Oyer grape dom. econ. 641.4 
10yo history preservd pub. helth 614.319 
Oyster catcher birds zoology 504.1 
plant 10zark co. Mo. history 977.8835 
Oysters grape 634.845109 
cookery dom.econ. 641.6 10zaukee co. Wis. history 977.592 
fisheries 639.41 Ozocerite economic geol. 553.2% 
food dom. econ. 641.3 Ozone chemistry 546.21 
fossils 564.1 hygiene . 613.16 
Topics in black face type are subdivided. Superior figures refer to the tables at the end of this index