Cox, S. W. R. Instrumentation in agriculture / by S. W. R. Cox, D. E. Filby. - London : Lockwood, 1972. - xii, 145 p. : ill. ISBN: 0258968427 Nat. Bib. No.: B72-04489 Subjects--Topical Terms: Measuring instruments.Agricultural instruments. LC Class. No.: S676.5 / .C69 1972 Dewey Class. No.: 631.3