- CURRENT ISSUE:
Summer(2008), Vol. 49, no. 1 in PDF chal4901.pdf (458 kb) -
- PAST ISSUES:
- Spring(2008), Vol. 48, no. 4 in PDF chal4804.pdf (808 kb)
- Winter(2008), Vol. 48, no. 3 in PDF chal4803.pdf (1.2 mb)
- Autumn(2007), Vol. 48, no. 2 in PDF chal4802.pdf (224 kb)
- Summer(2007), Vol. 48. no. 1 in PDF chal4801.pdf (444 kb)
- Spring(2007), Vol. 47. no. 4 in PDF chal4704.pdf (244 kb)
- Winter(2007), Vol. 47, no. 3 in PDF chal4703.pdf (213 kb)
- Autumn(2006), Vol. 47, no. 2 in PDF chal4702.pdf (296 kb)
- Autumn(2004), Vol. 46, no. 2 in PDF chal4602.pdf (294 kb)
- Summer (2004), Vol. 46, no. 1 in PDF chal4601.pdf (212 kb)
- Spring (2004), Vol. 45, no. 4 in PDF chal4504.pdf (289 kb)
- Winter (2004), Vol. 45, no. 3 in PDF chal4503.pdf (491 kb)
- Autumn (2003), Vol. 45, no. 2 in PDF chal4502.pdf (227 kb)
- Summer (2003), Vol. 45, no. 1 in HTML and in PDF chal4501.pdf (212 kb)
- Spring (2003), Vol. 44, no. 4 in HTML (text version) in PDF chal4404.pdf (297 kb)
- Winter (2003), Vol. 44, no. 3 in HTML (text version) in PDF chal4403.pdf (286 kb
- Autumn (2002), Vol. 44, no. 2 in HTML (text version) n PDF chal4402.pdf (361 kb
- Summer (2002), Vol. 44, no. 1 in HTML in PDF chal4401.pdf (223 kb)
- Spring (2002), Vol. 43, no. 4 in HTML also in PDF chal4304.pdf (325 kb)
- Winter (2002), Vol. 43, no. 3 in HTML also in PDF chal4303.pdf (343 kb)
- Fall (2001), Vol. 43, no. 2 in HTML also in in PDF chal0110.pdf
- Summer (2001), Vol. 43, no. 1 in PDF chal0103.pdf
- Winter 2001 in PDF chal4203.pdf
- Summer 2000 in PDF chal4201.pdf
- Spring 2000 in PDF chal4104.pdf
- Winter, 2000, Vol. 41, n. 3 (chal0001.htm) PDF chal0001.pdf
- Fall, 1999, Vol. 41, n. 2 (chal9910.htm)
- Summer, 1999, Vol. 41, n. 1 (chal9907.htm) PDF chal9907.pdf
- Spring, 1999, Vol. 40, n. 4 (chal9904.htm) PDF chal9904.pdf
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Allows you to view, navigate, and print Portable Document Format (.PDF) files across all major computing platforms. Acrobat Reader is the free viewing companion to Adobe Acrobat 4.0 and to Acrobat Capture(R) software. - Winter(2008), Vol. 48, no. 3 in PDF chal4803.pdf (1.2 mb)