An Introduction to systems analysis : /
Jeffers, John N. R.
An Introduction to systems analysis : / Jeffers, John N. R. - a ed. - London ; Edward Arnold , 1978 - 198 p. ; 22 cm. : il. :
713126531
ECOLOGY
574
An Introduction to systems analysis : / Jeffers, John N. R. - a ed. - London ; Edward Arnold , 1978 - 198 p. ; 22 cm. : il. :
713126531
ECOLOGY
574