"Ciclos comerciales." . . . . "Ciclos económicos." . . "Agrarkonjunktur." . . . . . . . . . "Agriculture and the trade cycle their mutual relations, with special reference to the period 1926-1931"@en . . "Agriculture and the trade cycle : their mutual relations, with special reference to the period 1926 - 1931" . "Agriculture and the trade cycle their mutual relations, withe special reference to the period 1926-1931"@en . . . . "Agriculture and the trade cycle : Their mutual relations with special reference to the period, 1926-1931" . . "Agriculture and the trade cycle : their mutual relations with special reference to the period 1926-1931" . . . . "Agriculture and the trade cycle, their mutual relations, with special reference to the period 1926-1931" . . . "Agriculture and the trade cycle : their mutual relations, with special reference to the period : 1926-1931" . "Agriculture and the Trade Cycle. Their mutual relations, with special reference to the period 1926-1931"@en . "Agriculture and the trade cycle: their mutual relations, with special reference to the period 1926-1931" . . . "Agriculture and the trade cycle : their mutual relations, with special reference to the period 1926-1931"@en . "Agriculture and the trade cycle : their mutual relations, with special reference to the period 1926-1931" . . "Agriculture and the trade cycle: their mutual relations, with special reference to the priod 1926-1931" . . "Agriculture and the trade cycle their mutual relations with special reference to the period 1926-1931" . . . "Agriculture and the trade cycle: their mutual relations, with special reference to the period 1926-1931, by John H. Kirk"@en . . . . . . "Agriculture and the trade cycle" . . . . "Schwankung." . .