A researcher here at the University of California, Davis was interested in exploring three references (see below) that are not available through any of our usual library resources. It is not clear to me that these were actually ever published, but before giving up, I thought I would try this list. Bhattacharya TK, Mishra TN, Singh B. Techniques for removal of CO2 and H2S from biogas. Paper presented at XXIV annual convention of ISAE, held at PKV, Akola, 1988. Bhattacharya is a faculty member in the Department of Farm Machinery & Power Engineering at G.B. Pant University of Agriculture and Technology Khapre UL. Studies on biogas utilization for domestic cooking. Paper presented at XXV annual convention of ISAE, held at CTAE, Udaipur; 1989. Dubey AK. Wet scrubbing of carbon dioxide. Annual report of CIAE, Bhopal (India); 2000. Dubey is a researcher in the Agricultural Energy & Power Division of CIAE. Many thanks in advance, Bob ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Bob Heyer-Gray Engineering/Transportation/Mathematics/Statistics Librarian Physical Sciences & Engineering Library 100 NW Quad, University of California, Davis, CA 95616-5292, USA ph: 530.752.0348 fax: 530.752.4719 e-mail: bobhg@lib.ucdavis.edu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean.