Biochar for environmental management science and technology /

Table of Contents: “….] -- Biochar production technology / Robert Brown -- Biochar systems / Johannes Lehmann, Stephen Joseph -- Changes of biochar in soil / Karen Hammes, Michael W.I. Schmidt -- Stability of biochar in soil / Johannes Lehmann ... …”
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Mechanical engineers' handbook

Table of Contents: “…Cleetus [et al.] -- Computer-Aided Design / Emory Zimmers, Jr. -- Virtual Reality - A New Technology for the Mechanical Engineer / Tushar H. …”