The rotational grass ley offered beef and dairy produce, in addition to sufficient excessive-grade soil fertility for a succession of grain and root crops after the grass was ploughed up -- actually sustainable farming. April 13: A massive Allied bombing raid hits German targets in Hungary and Yugoslavia, as well as in Nazi Germany proper. April 11: giá xây nhà tại Bảo Lộc The RAF destroys the Gestapo's headquarters within the Hague, including recordsdata on individual Dutch nationals scheduled to be deported to the Nazi camps.