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DISTRIBUTION OF ABSORBING ROOTS OF COFFEE ( Coffea arabica L. ) AND RUBBER ( Hevea brasiliensis Muell . Arg . ) IN MIXED PLANTINGS IN TWO ECOLOGICAL ZONES OF COSTA RICA By Malcolm R. Gehrke V. Inter - American Institute of Agricultural ... | |
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GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . Mag . Agr . thesis . Turrialba , Costa Rica ... | |
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IICA = ( 1920 GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological . zones of Costa Rica . Mag . | |
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GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . Tesis Mag . Agr . Turrialba , Costa Rica ... | |
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GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . Tesis Mag . Agr . Turrialba , Costa Rica ... | |
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GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . 1962. 105 p . Se estudió la distribución de ... | |
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( 413 GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . Tesis Mgr . Agr . Turrialba , Costa ... | |
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GEHRKE VELEZ , M. R. Distribution of absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . Tesis Mag . Agr . Turrialba , 1962 . | |
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... absorbing roots of coffee ( Coffea arabica L. ) and rubber ( Hevea brasiliensis Muell . Arg . ) in mixed plantings in two ecological zones of Costa Rica . Thesis Mag . Agr . Turrialba , C. R. , IICA , 1962 . 105 p . | |
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