"pacy, arnold . "
hand-pump maintenance: / arnold.. pacy - 1 ed. - uk : intermediate technology 1977. - ", 43p.; 21 cm."
0 903031 70 1
TP157 / .P33 1977
hand-pump maintenance: / arnold.. pacy - 1 ed. - uk : intermediate technology 1977. - ", 43p.; 21 cm."
0 903031 70 1
TP157 / .P33 1977