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31 35 30 50 45 29 32 36 27 39 44 40 51 35 47 45 42 23 49 34 46 41 57 33 48 52 

 PIECE NUMBER -AIR 5EA5QNED CAR SILLS 



Fid. 1. — Relation between modulus of rupture and other test values for green and air- 

 seasoned car sills. 



