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Epoxidations and Hydroperoxidations of α,β-Unsaturated Ketones: An Approach through Asymmetric Organocatalysis (Springer Theses) from $88.58	Spin-Transition in FeIIN6 Complexes: Effect of Counter-Anions on Spin-Transtion of FeII Complexes from $66.00
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Digi 1st TC-890 Digital Tally Counter, Electronic Up Down Clicker Counter, Add/Subtract People Counter, Handheld Pitch Counter for Golf, Lap & Knitting (1-Pack) from $13.95	Frienda 4 Pieces Digital Hand Tally Counter Golf Sports Counter Electronic Add Subtract Manual Clicker Handheld Mechanical Number Click Counter with Neck Lanyard from $14.99
Mechanical Counter, Rotary Revolution Counter, 75-I 5 Digits Display Mechanical Resettable Rotary Revolution Counter with Count Range 0-99999 from $14.29	DIGITEN LCD Digital 0-99999 Counter 5 Digit Plus UP Gauge + Proximity Switch Sensor with Magnetic $14.49 from $13.04