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	1.	Talipes equinovarus associated with an absent posterior tibial tendon and a tarsal coalition: a case report. [electronic resource] by Callahan, R A Producer: 19800726 In: Clinical orthopaedics and related research no. 146 Availability: No items available. Save to lists Add to cart (remove)
	2.	Positioning techniques in spinal surgery. [electronic resource] by Callahan, R A Brown, M D Producer: 19810521 In: Clinical orthopaedics and related research no. 154 Availability: No items available. Save to lists Add to cart (remove)
	3.	A rational approach to burst fractures of the atlas. [electronic resource] by Schlicke, L H Callahan, R A Producer: 19810521 In: Clinical orthopaedics and related research no. 154 Availability: No items available. Save to lists Add to cart (remove)
	4.	Modified Brooks fusion for an os odontoideum associated with an incomplete posterior arch of the atlas. A case report. [electronic resource] by Callahan, R A Lockwood, R Green, B Producer: 19830817 In: Spine vol. 8 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Rates of disappearance of Zolone and Imidan from alfalfa. [electronic resource] by Shaw, F R Callahan, R A Miller, M C Producer: 19671022 In: Journal of economic entomology vol. 59 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	Cervical orthoses: a guide to their selection and use. [electronic resource] by Johnson, R M Owen, J R Hart, D L Callahan, R A Producer: 19810521 In: Clinical orthopaedics and related research no. 154 Availability: No items available. Save to lists Add to cart (remove)
	7.	Acute spinal cord injury: current concepts. [electronic resource] by Green, B A Callahan, R A Klose, K J de la Torre, J Producer: 19810521 In: Clinical orthopaedics and related research no. 154 Availability: No items available. Save to lists Add to cart (remove)
	8.	Ronnel residues in eggs of poultry. [electronic resource] by Smith, C T Shaw, F R Anderson, D L Callahan, R A Ziener, W H Producer: 19660122 In: Journal of economic entomology vol. 58 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	9.	The value of computed tomography in spinal trauma. [electronic resource] by Post, M J Green, B A Quencer, R M Stokes, N A Callahan, R A Eismont, F J Producer: 19830214 In: Spine vol. 7 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	10.	Cervical facet fusion for control of instability following laminectomy. [electronic resource] by Callahan, R A Johnson, R M Margolis, R N Keggi, K J Albright, J A Southwick, W O Producer: 19780218 In: The Journal of bone and joint surgery. American volume vol. 59 Availability: No items available. Save to lists Add to cart (remove)