کتاب های Donald L Downing
A Complete Course in Canning and Related Processes - 3 Volume set
Donald L. Downing, 1996
A Complete Course in Canning and Related Processes: Fundamental information on canning (vol 1)
Donald L. Downing, 1996
A Complete Course in Canning and Related Processes: Fundamental Information on Canning (vol. 3)
Donald L. Downing, 1996
