Ryan, W.J.L .
Price theory / Textual Documents W.J.L.Ryan. - London : MacMillan and Company Limited , 1965. - 396 ; .
338.521 / RYA/PR
Price theory / Textual Documents W.J.L.Ryan. - London : MacMillan and Company Limited , 1965. - 396 ; .
338.521 / RYA/PR