Ritchie, James D .
Source Book for Farm Energy Alternatives / - 1 / - New York : McGraw Hill Book Company , 1983. - 232 ; .
0-07-052951-5
333.79 / RIT/SO
Source Book for Farm Energy Alternatives / - 1 / - New York : McGraw Hill Book Company , 1983. - 232 ; .
0-07-052951-5
333.79 / RIT/SO