Why Precisely Zyklon

The academic question, therefore, of whether or not some other poison gas would have been better suited for the mass murders instead of hydrogen cyanide in the form of Zyklon B cannot, in the last analysis, be answered, since there are no scientifically documented experimental values for mass murder by poison gas. 

494 James Bacques, Other Losses, Stoddart, Toronto 1989 Bacque, Crimes and Mercies, Little, Brown Co., Toronto 1996. 

The poison gas CO was available in limitless quantities and in lethal concentrations at giveaway prices, substantially cheaper than 

Zyklon B, on almost every street comer in the Third Reich  

496 See Friedrich P. Berg, The Diesel Gas Chambers Ideal for Torture—Absurd for Murder , in Ernst Gauss (ed.), op. cit. (note 22), pp. 435-465 (online www.vho.org/GB/Books/dth/fndieselgc.html). 

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