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al ayna (el aina) bedshared devaluations dibenzoyl thiourea drosophila (lordiphosa) chaolipinga Euphorbia resinifera high stomach john ray Liparis dunnii method of single stimulus paddle-shift plan sth out recissory action tansky thermal trip three-phase full wave constant voltage rectifier Vilcabamba water surface equilibrium vapor pressure wear strip Young Women's Christian Association