"becker, robert e. "
a practical guide to rafter calculations: / robert.e. becker - 1 ed. - uk : thomson business 1986. - ", 111p.; 21 cm."
1 850 32 020 9
TH1101 / .B69 1986
a practical guide to rafter calculations: / robert.e. becker - 1 ed. - uk : thomson business 1986. - ", 111p.; 21 cm."
1 850 32 020 9
TH1101 / .B69 1986