"harrop, p f. "
"exercises in engineering drawing book i:a set of graded exam: ples for technical schools, institutes and colleges/ p.f. harrop" - 1 ed. - uk : macmillan 1966. - ", 62p.; 25 cm."
744. 422 har
"exercises in engineering drawing book i:a set of graded exam: ples for technical schools, institutes and colleges/ p.f. harrop" - 1 ed. - uk : macmillan 1966. - ", 62p.; 25 cm."
744. 422 har